Meisterline Controls
Part number reference · Supplementary protectors

UL 1077 supplementary protector ratings and part numbers

Meisterline Controls scopes and quotes UL 508A control panels. This page lines up UL 1077 supplementary protectors from five brands by trip curve and rated current, and shows how each line’s part numbers are built: series, poles, trip curve and current, with the catalog page for each.

A UL 1077 supplementary protector is not a branch circuit breaker. It protects a device inside a panel where branch circuit protection already exists upstream.

Branch circuit protection has to be listed to UL 489.

What the catalogs say. Eaton: “supplementary breakers cannot be used as a substitute for the branch circuit protective device. They can be used to provide overcurrent protection within an appliance or other electrical equipment where branch circuit overcurrent protection is already provided, or is not required” (CA08100005E, V4-T1-76), and “UL 489 devices can be used in place of UL 1077; UL 1077 devices cannot be used in place of UL 489” (V4-T1-73). Rockwell: 1492-SP supplementary protectors “provide overcurrent protection for equipment where branch circuit protection is already provided, or is not required” (1492-SG122Q, p.20). ABB lists its UL 1077 series as a “UL 1077 recognized supplemental protective device” (9AKK108467A9680, p.6-33).

Trip curve and rated current side by side

A matching row is a starting point, not an equivalent. Poles, voltage rating in alternating or direct current (AC or DC), interrupting rating at your voltage, and the catalog’s own trip band for the curve letter all have to be checked before a part can be substituted. Send the list and we’ll check it against your ratings.

Trip curve is the letter the brand prints for the magnetic trip band, as a multiple of rated current (In). Each brand sets its own bands (see the note under the table). Rated current is the In printed in the ordering table. One row per trip curve and rated current; no brand’s line is the anchor, and the columns run in alphabetical order. A cell names the series that print a part at exactly that curve and current, where the catalog states UL 1077 for it. A larger rating is never put in its place. An empty cell means that catalog prints no UL 1077 part at that curve and current, unless a note under the row says otherwise.

Poles, voltage and interrupting rating aren’t columns: they change within a series by pole count and voltage, so they are read per part number from the catalog pages listed under the table. Every series named here is one whose catalog states UL 1077, so the standard isn’t a column either.

Trip curveRated current ABBAllen-BradleyEatonSchneider Electric (Square D)Siemens
A0.5 A5SY4
A1 A5SY4
A1.6 A5SY4
A2 A5SY4
A3 A5SY4
A4 A5SY4
A6 A5SY4
A8 A5SY4
A10 A5SY4
A13 A5SY4
A16 A5SY4
A20 A5SY4
A25 A5SY4
A32 A5SY4
A40 A5SY4
A50 A5SY4
A63 A5SY4
B0.5 AST200M1492-SPC60SP
B1 AST200M1492-SPFAZC60SP
B1.6 AST200M
B2 AST200M1492-SPFAZC60SP5SY4 / 5SY6 / 5SY5
B3 AST200M1492-SPFAZC60SP
B4 AST200M1492-SPFAZC60SP5SY4 / 5SY6
B 15 AST200M1492-SPFAZC60SP
B6 AST200M / S300P / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B7 AST200M1492-SPFAZ
B8 AST200M / S300P / S800S1492-SPFAZC60SP
B10 AST200M / S300P / S800C / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B12 AFAZ
B13 AST200M / S300P / S800C / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B15 AST200M1492-SPFAZ
B16 AST200M / S300P / S800C / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B20 AST200M / S300P / S800C / S800S1492-SPFAZC60SP5SY4 / 5SY6 / 5SY5
B25 AST200M / S300P / S800C / S800S1492-SPFAZC60SP5SY4 / 5SY6 / 5SY5
B30 AST200M1492-SPFAZ
B32 AST200M / S300P / S800C / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B35 AST200M
B40 AST200M / S300P / S800C / S800S1492-SPFAZC60SP5SY4 / 5SY6 / 5SY5
B45 AC60SP
B50 AST200M / S300P / S800C / S800S1492-SPFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
B60 AST200M
B63 AST200M / S300P / S800C / S800S1492-SPFAZC60SP5SY4 / 5SY6 / 5SY5
B80 AS800P5SP4
B100 AS800P5SP4
B125 A5SP4
C0.3 A5SY4 / 5SY6 / 5SY5
C0.5 AST200M / S200MUC / S300P1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C1 AST200M / S200MUC / S300P1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C1.6 AST200M / S200MUC / S300P1492-DFAZ5SY4 / 5SY6 / 5SY5
C2 AST200M / S200MUC / S300P1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C3 AST200M / S200MUC / S300P1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C4 AST200M / S200MUC / S300P1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C 15 AST200M1492-SPFAZC60SP5SY4 / 5SY6
C6 AST200M / S200MUC / S300P / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C7 AST200M1492-SPFAZ
C8 AST200M / S200MUC / S300P / S800S1492-SP / 1492-DFAZC60SP5SY4 / 5SY6 / 5SY5
C10 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C13 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C15 AST200M1492-SPFAZ5SY4 / 5SY6
C16 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C20 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C25 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C30 AST200M1492-SPFAZ5SY4 / 5SY6
C32 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C35 AST200M5SY4
C40 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C45 AC60SP5SY4
C50 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C60 AST200M5SY4
C63 AST200M / S200MUC / S300P / S800C / S800S1492-SP / 1492-DFAZC60SP / C60H-DC5SY4 / 5SY6 / 5SY5
C80 AS800P5SP4
C100 AS800P5SP4
C125 A5SP4
D0.3 A5SY4
D0.5 AST200M / S300P1492-SPFAZC60SP D (=K)5SY4
D1 AST200M / S300P1492-SPFAZC60SP D (=K)5SY4
D1.6 AST200M / S300P5SY4
D2 AST200M / S300P1492-SPFAZC60SP D (=K)5SY4
D3 AST200M / S300P1492-SPFAZC60SP D (=K)5SY4
D4 AST200M / S300P1492-SPFAZC60SP D (=K)5SY4
D 15 AST200M1492-SPFAZC60SP D (=K)
D6 AST200M / S300P / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D7 AST200M1492-SPFAZ
D8 AST200M / S300P / S800S1492-SPFAZC60SP D (=K)5SY4
D10 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D13 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K)5SY4
D15 AST200M1492-SPFAZ
D16 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K)5SY4
D20 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D25 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D30 AST200M1492-SPFAZ
D32 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D35 AST200M
D40 AST200M / S300P / S800C / S800S1492-SPFAZC60SP D (=K) / C60H-DC D (=K)5SY4
D50 AST200M / S300P / S800C / S800S1492-SPC60H-DC D (=K)5SY4
D60 AST200M
D 263 AST200M / S300P / S800C / S800S1492-SPC60H-DC D (=K)5SY4
D80 AS800P5SP4
D100 AS800P5SP4
K0.2 AS200MUC / S300P
K0.3 AS200MUC / S300P
K0.5 AST200M / ST200MTR / S200MUC / S300PFAZC60SP D (=K)
K0.75 AS200MUC / S300P
K1 AST200M / ST200MTR / S200MUC / S300PFAZC60SP D (=K)
K1.6 AST200M / ST200MTR / S200MUC / S300PFAZ
K2 AST200M / ST200MTR / S200MUC / S300PFAZC60SP D (=K)
K3 AST200M / ST200MTR / S200MUC / S300PFAZC60SP D (=K)
K4 AST200M / ST200MTR / S200MUC / S300PFAZC60SP D (=K)
K 15 AST200M / ST200MTR / S200MUCC60SP D (=K)
K6 AST200M / ST200MTR / S200MUC / S300P / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K7 AST200M
K8 AST200M / ST200MTR / S200MUC / S300P / S800SFAZC60SP D (=K)
K10 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K13 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K)
K15 AST200M / ST200MTR / S200MUC
K16 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K)
K20 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K25 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K30 AST200M / ST200MTR / S200MUC
K32 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K35 AST200M / ST200MTR / S200MUC
K40 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60SP D (=K) / C60H-DC D (=K)
K50 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60H-DC D (=K)
K60 AST200M / ST200MTR / S200MUC
K63 AST200M / ST200MTR / S200MUC / S300P / S800C / S800SFAZC60H-DC D (=K)
K80 AS800P
K100 AS800P
S1 AFAZ
S2 AFAZ
S3 AFAZ
S4 AFAZ
S6 AFAZ
S10 AFAZ
S16 AFAZ
S20 AFAZ
S25 AFAZ
S32 AFAZ
S40 AFAZ
Z 30.5 AST200M / ST200MTR / S200MUC / S300P
Z1 AST200M / ST200MTR / S200MUC / S300PFAZ
Z1.6 AST200M / ST200MTR / S200MUC / S300PFAZ
Z2 AST200M / ST200MTR / S200MUC / S300PFAZ
Z3 AST200M / ST200MTR / S200MUC / S300PFAZ
Z4 AST200M / ST200MTR / S200MUC / S300PFAZ
Z5 AST200M / ST200MTR / S200MUC
Z6 AST200M / ST200MTR / S200MUC / S300PFAZ
Z7 AST200M
Z8 AST200M / ST200MTR / S200MUC / S300PFAZ
Z10 AST200M / ST200MTR / S200MUC / S300PFAZ
Z13 AST200MFAZ
Z15 AST200M / ST200MTR / S200MUC
Z16 AST200M / ST200MTR / S200MUC / S300PFAZ
Z20 AST200M / ST200MTR / S200MUC / S300PFAZ
Z25 AST200M / ST200MTR / S200MUC / S300PFAZ
Z30 AST200M / ST200MTR / S200MUC
Z32 AST200M / ST200MTR / S200MUC / S300PFAZ
Z35 AST200M / ST200MTR / S200MUC
Z40 AST200M / ST200MTR / S200MUC / S300PFAZ
Z50 AST200M / ST200MTR / S200MUC / S300PFAZ
Z60 AST200M / ST200MTR / S200MUC
Z63 AST200M / ST200MTR / S200MUC / S300PFAZ
Not printed0.1 AXBAT9080GCB
Not printed0.2 A1492-GH / 1492-GS
Not printed0.25 AXBAT
Not printed0.5 A1492-GH / 1492-GSXBAT9080GCB
Not printed0.8 A1492-GH / 1492-GS9080GCB
Not printed1 A1492-GH / 1492-GSXBAT9080GCB
Not printed1.2 A1492-GH9080GCB
Not printed1.5 A1492-GH / 1492-GS9080GCB
Not printed2 A1492-GH / 1492-GSXBAT9080GCB
Not printed2.5 A1492-GH / 1492-GS9080GCB
Not printed3 A1492-GH / 1492-GSXBAT9080GCB
Not printed4 A1492-GH / 1492-GSXBAT9080GCB
Not printed5 A1492-GH / 1492-GS9080GCB
Not printed6 A1492-GSXBAT
Not printed7 A1492-GH / 1492-GS9080GCB
Not printed8 A1492-GSXBAT
Not printed10 A1492-GH / 1492-GSXBAT9080GCB
Not printed12 A1492-GS
Not printed15 A1492-GH / 1492-GS9080GCB
Not printed16 A1492-GS
Not printed20 A1492-GS
Not printed 425 A1492-GS
1
The ABB S800S at 0.5 through 5 A is not named in this curve's rows. Two ABB documents give different UL 1077 current ranges for it; the detail is in the ABB section below.
2
Eaton prints the FAZ D curve at 50 A and 63 A as “IEC 60947-2 only” (V4-T1-78), and gives the UL/CSA current range for the D curve as 0.5–40 A (V4-T1-86). So no Eaton series is named in the D 50 A and D 63 A rows.
3
Eaton's Z-curve ordering table lists the FAZ-Z at 0.5 A, while its technical data gives the UL and CSA Z-curve current range as 1 through 63 A. The 0.5 A Z-curve FAZ is left out of this row.
4
Allen-Bradley 1492-GH and 1492-GS and Eaton XBAT are printed without a trip curve letter, so they are listed by rated current only. Rockwell gives a trip range of 6…10 × In for 1492-GH/-GS (1492-SG122Q, p.122). Eaton describes the XBAT as a thermal miniature circuit breaker (CA08100008E, V7-T8-83).
Schneider Electric’s Square D 9080GCB circuit protectors are printed without a trip curve, so they are also listed by rated current only: 0.1 to 7 A at 250 V and 10 and 15 A at 125 V, one pole (Digest 179 Section 21, page 23, which prints UL file E233026 with UL category QVNU2).

Ratings and UL 1077 statements: ABB control catalog 9AKK108467A9680 Section 6 (2026-04), pages 6-6 and 6-33 to 6-59, and ABB System pro M compact catalog 1SXU400208C0201 (2026-02), page 92. Allen-Bradley: Rockwell 1492-SG122Q-EN-P (2023-07), pages 20–24, 40–43 and 118–122. Eaton: CA08100005E (2026-07), pages V4-T1-73 to V4-T1-87, and CA08100008E (2019-10), pages V7-T8-82 and V7-T8-83. Schneider Electric: Multi9 catalog LVCATM9OEM_EN (version 2.2, 2026-04), pages 18–22, and Square D Digest 179, Section 7 (2026-09), pages 7-28 and 7-29. Siemens: Industrial Controls catalog Section 16 (2022-04), pages 16/2, 16/13 to 16/18 and 16/23. Supplementary protectors from other brands, such as Phoenix Contact and Sprecher+Schuh, aren’t named in this table: Meisterline Controls names a series once its UL 1077 statement has been read on the catalog page, and those lines are covered through our Parts Check.

Same brand, same look, different standard. Several lines sell a UL 489 branch circuit breaker next to a UL 1077 supplementary protector with a similar number. Eaton: FAZ is in the UL 1077 section (V4-T1-74), while FAZ-NA is in the UL 489 section and lists “UL 489, UL 1077” (V4-T1-47). ABB: ST200M, S200MUC, S300P, S800C, S800S, S800P and ST200MTR are listed under “UL 1077 supplementary protectors”, while SU200M and S800U are under “UL 489 circuit breakers” (p.6-3). Allen-Bradley: 1492-SP is UL 1077 (p.20), while 1489-M is UL 489, UL Listed (p.3). Schneider Electric: C60SP is UL 1077 (Multi9 p.18), while C60BPR is UL 489 (Multi9 p.16). Siemens: 5SY4, 5SY6, 5SY5 and 5SP4 are UL 1077 (pages 16/13 to 16/18), while 5SJ4 is UL 489 (page 16/4). Check the standard on the exact part number, not the family name.
A curve letter doesn’t mean the same band on every line. Eaton prints D as 10–20 × In and K as 8–12 × In (V4-T1-75). Schneider Electric prints its third curve as “D (=K)” in the Multi9 catalog (pages 18 and 21) and as “K (= D)” for the C60H-DC in the Digest (page 7-29), at 12 × In ± 20 % in alternating current (Multi9 p.20). Schneider parts printed that way are listed on both the D and the K rows, marked “D (=K)”. Siemens prints D as 10 to 20 times In (page 16/2). Compare the printed band, not only the letter.
Neutral-pole versions differ by line. Rockwell notes that 1492-SP 1+N and 3+N devices are not UL Recognized (p.20) and “not UL or CSA certified” (pp.23–24), while Siemens includes 1-pole + N and 3-pole + N in the 5SY4 statement “All 5SY4 designs have been certified to UL 1077” (page 16/13). Check the UL line for the neutral-pole version itself.

How each line’s part numbers are built

Each section uses only that line’s own catalog, with the page for every code. Where two pages or documents from the same brand disagree, the item is left out and noted.

ABB ST200M, S200MUC, S300P, S800 and ST200MTR

Format: series with the pole count built in, a hyphen, the trip curve letter, then the rated current, for example ST201M-C10. Source: ABB control catalog 9AKK108467A9680, Section 6 (2026-04). ABB prints an “Ordering code construction – UL1077” key on page 6-6, marked “Reference only”, for the ST, S200 and S300 numbers. The S800 numbers aren’t in that key; their segments below are the headings of the ordering tables they are printed in.

The series (page 6-33)

SeriesTrip curvesPolesVoltageOrdering pages
ST200MB, C, D, K, Z1, 2, 3480Y/277 V AC; 60/125 V DC (1-/2-pole)6-34 to 6-38
S200MUCC, K, Z1, 2, 3, 4480Y/277 V AC; 250/500 V DC (1-/2-pole)6-39 to 6-41
S800SB, C, D, K1, 2, 3, 4600Y/347 V AC6-46 to 6-49
S800CB, C, D, K1, 2, 3, 4480Y/277 V AC; up to 500 V DC6-42 to 6-45
S800PB, C, D, K1, 2, 3, 4480Y/277 V AC; up to 500 V DC6-50
S300PB, C, D, K, Z1, 2, 3, 4480Y/277 V AC; 60/125 V DC6-51 to 6-55
ST200MTRK, Z1, 2, 3, 4 AC; 1, 2, 4 DC480Y/277 V AC; 1-pole 250 V DC, 2-/4-pole up to 500 V DC6-56 to 6-59

Segments

SegmentMeaningPage
SMini breaker6-6
T2 / 2 / 3T2 as in ST201M; 2 = old platform, 3 = new platform (S200MUC, S300P)6-6
01 / 02 / 03 / 041, 2, 3 or 4 poles6-6; “Number of poles” column on 6-34 to 6-59
M / MUC / P / MTRM = standard MCB (miniature circuit breaker); MUC = direct current; P = 10 kA interrupting rating through 63 A; MTR = traction cert. (the ST200MTR pages are headed “ring tongue terminal”)6-6; 6-56
S80▢S / S80▢C / S80▢PS800S, S800C, S800P with the pole count as the fourth character (S801S = 1-pole, S804S = 4-pole)6-42 to 6-50
– B / C / D / K / ZTrip curve (page headings such as “ST200M-C” and “K characteristic”)6-6; 6-34 to 6-59
number at the endRated current In in amps. Some pages print the decimal with a comma (ST201MTR-K0,5, S301P-K0,5) and others with a point (ST201M-B0.5).6-34, 6-54, 6-56
DC (ST200MTR)Direct current version: the pages are headed “K characteristic — DC” and “Z characteristic — DC”, for example ST201MTR-K0,5 DC6-57, 6-59

The ABB S800S below 6 A is left off the table. ABB's control catalog 9AKK108467A9680 lists the S800S at 0.5 to 63 A in its UL 1077 series on page 6-33, and prints 0.5 through 5 A numbers on pages 6-46 to 6-49. The System pro M compact catalog 1SXU400208C0201 prints a rated current of 6 to 63 A for the S800S under UL 1077 on page 92.

This is also why there is no 2.5 A row for the B, C, D and K curves — the S800S is the only series printing 2.5 A.

ABB's key on page 6-6 and its ordering pages differ in two places, so neither item from the key is used here. The key gives the current range as 10 A to 100 A, where the ordering pages print 0.2 through 63 A on pages 6-33 to 6-59. The key gives the T2 interrupting rating as 10 kA up to 32 A and 6 kA above, where page 6-33 gives the ST200M short circuit interrupting rating as 10/5 kA.

Page 6-35 also prints the three-pole 20 A C-curve number as ST203M-BC20.

One number, segment by segment

SegmentValueMeaningPage
Mini breakerSMini breaker6-6
SeriesT2ST200M series6-6, 6-33
Poles011 pole6-6, 6-35
TypeMStandard MCB6-6
Trip curveCC curve (page heading “ST200M-C”)6-6, 6-35
Rated current1010 A6-35

ST201M-C10 is ABB’s own example on page 6-6 and is printed in the 1-pole column of the C-curve table on page 6-35.

Allen-Bradley 1492-SP, 1492-D, 1492-GH and 1492-GS

Format: 1492- + series code + poles + trip curve + current code, for example 1492-SPM1C100. Source: Rockwell 1492-SG122Q-EN-P (2023-07). Rockwell prints a “Catalog Number Explanation” for each series (pages 21, 41 and 119) and notes that “Not all combinations generate a valid catalog number.”

1492-SP (page 21)

SegmentCodeMeaning
Voltage typeSPMAC supplementary protector
Poles1 / 2 / 31-, 2- or 3-pole
Trip curveB / C / DTrip curve B, C or D (B 3…5 × In, C 5…10 × In, D 10…20 × In, p.22)
Rated current005 … 630Current in tenths of an amp: 005 = 0.5 A, 010 = 1 A, 100 = 10 A, 630 = 63 A
+ NeutralN (or blank)Adds a neutral pole (1+N, 3+N). Rockwell: “1+N and 3+N devices are not UL Recognized, CSA Certified, or KCC Certified” (p.20).

1492-D, 1492-GH and 1492-GS

SeriesCodesPage
1492-DD = DC circuit breaker; poles 1 or 2; trip curve C only; current code as above (016 = 1.6 A). Example: 1492-D1C010.p.41
1492-GHGH = 1-pole; current code 002 = 0.2 A to 150 = 15 A. No curve letter. Example: 1492-GH002.p.119
1492-GSGS1G / GS2G / GS3G = 1, 2 or 3 poles; current code 002 = 0.2 A to 250 = 25 A; optional H1 = 1 N.O. integrated auxiliary contact. No curve letter. Example: 1492-GS1G002H1.p.119, p.120
Rockwell titles the 1492-D “Miniature Circuit Breakers”, and the same pages give its standard as UL 1077, “UL Recognized, File No. E65138”, with the application code “Supplementary Protector for DC application” (pp.40 and 43). Read the standard, not the product title.

One number, segment by segment

SegmentValueMeaningPage
Bulletin1492-Bulletin 1492p.21
Voltage typeSPMAC supplementary protectorp.21
Poles11-polep.21
Trip curveCTrip curve C, 5…10 × In, “Inductive”p.21, p.22
Rated current10010 Ap.21, p.22
+ Neutral(blank)No neutral polep.21

1492-SPM1C100 is printed in the 1-pole table on page 22.

Eaton FAZ and XBAT

Format: FAZ- + trip characteristic + ampere rating + / + number of poles, with an optional packaging suffix, for example FAZ-C10/2. Source: Eaton CA08100005E, Volume 4 (2026-07). Eaton prints a “Catalog Number Selection” key on page V4-T1-75.

FAZ segments (page V4-T1-75)

SegmentCodeMeaning
Breaker familyFAZSupplementary protector
Trip characteristicsB / C / D / K / S / ZB = 3–5X In; C = 5–10X In; D = 10–20X In; K = 8–12X In; S = 13–17X In; Z = 2–3X In
Ampere rating0.5 … 63The rating in amps (0.5 = 0.5 A, 13 = 13 A, 63 = 63 A)
Number of poles1 / 2 / 3 / 4 / 1N / 3NSingle-, two-, three-, four-pole; 1N = single-pole + neutral; 3N = three-pole + neutral
Single package-SP (or blank)SP = single packaging of single-pole B, C and D curves for select amperes; blank = standard packaging

UL/CSA current ranges by curve (pages V4-T1-86 and V4-T1-87): B 1–63 A, C 0.5–63 A, D 0.5–40 A, K 0.5–63 A, S 0.5–40 A, Z 1–63 A. Eaton marks the D-curve 50 A and 63 A as “IEC 60947-2 only” (V4-T1-78).

Eaton's Z-curve ordering table on page V4-T1-81 prints a 0.5 A rating, the FAZ-Z0.5, which sits outside the 1 to 63 A UL and CSA Z-curve range given on page V4-T1-87. The 0.5 A Z rating is left out of the table above.

XBAT (Volume 7, CA08100008E, 2019-10)

The XBAT is a single-pole thermal miniature circuit breaker that plugs into a fuse terminal block, “UL and cUL recognized”, “UL 1077—File No. E301915” (V7-T8-82). Eaton doesn’t print a numbering key; the ordering table on V7-T8-83 lists XBATCP followed by a current code, rated 250/65 V AC/DC.

Code after XBATCPTQH12346810
Nominal current0.1 A0.25 A0.5 A1 A2 A3 A4 A6 A8 A10 A

One number, segment by segment

SegmentValueMeaningPage
Breaker familyFAZSupplementary protectorV4-T1-75
Trip characteristicC5–10X In, “designed for inductive loads”V4-T1-75, V4-T1-77
Ampere rating1010 AV4-T1-75
Number of poles/2Two-poleV4-T1-75
Packaging(blank)Standard packagingV4-T1-75

FAZ-C10/2 is printed in the two-pole column of the C-curve table on page V4-T1-77.

Schneider Electric C60SP and C60H-DC

Schneider’s numbers are eight characters, for example M9F22110. Sources: Multi9 catalog LVCATM9OEM_EN (version 2.2, 2026-04) = Multi9 catalog; Square D Digest 179, Section 7 (2026-09) = Digest. Neither prints a numbering key, so this section shows where each number is printed: the row gives the rated current and the column gives the pole count and curve.

Where the numbers are printed

SeriesNumbers startCurves (column headings)PolesPages
C60SPM9F2B, C, D (=K)1, 2 (p.18); 3, 4 (p.19)Multi9 catalog pp.18–19; Digest p.7-28
C60H-DCM9UMulti9 catalog: C, D (=K) for 1-pole and B, C, D (=K) for 2-pole. Digest: B, C, K (= D)1, 2Multi9 catalog p.21; Digest p.7-29

Both documents describe the C60SP and C60H-DC as “supplementary protection as defined by UL 1077” (Multi9 catalog pp.18 and 21; Digest pp.7-28 and 7-29), and the Multi9 catalog gives “UL 1077 supplementary protection, document #E90509” for the C60SP (p.19). The C60H-DC is for direct current only (p.21).

Schneider's two documents name different C60SP and C60H-DC numbers, so this table uses only numbers printed in both. Twelve C60SP D-curve numbers at 45, 50 and 63 A appear in the Digest on page 7-28 and print as a dash in the Multi9 catalog on pages 18 and 19. For the C60H-DC, the Digest table on page 7-29 and the Multi9 table on page 21 share 45 numbers, with 33 more appearing in only one of them.

Neither document states Listed or Recognized for these series. The Digest heads its C60SP interrupting rating column with UL 489 and CSA C22.2 No. 235, and its C60H-DC column with UL 1077 and CSA C22.2 No. 5.

One number, read from the table

PartValueWhere it is printedPage
SeriesC60SPTable “C60SP”, tunnel terminal connectionMulti9 catalog p.18; Digest p.7-28
Poles1P1P columnMulti9 catalog p.18
Trip curveCCurve C columnMulti9 catalog p.18
Rated current10 ARating (In) row 10Multi9 catalog p.18
Catalog numberM9F22110The same number in both documentsMulti9 catalog p.18; Digest p.7-28

Siemens 5SY and 5SP

Format: series, a pole digit, a two-digit current code, a hyphen and a tripping characteristic digit, for example 5SY4 210-7. Siemens prints the number with a space after the series; it is also written without it (5SY4210-7). Source: Siemens Industrial Controls catalog Section 16 (2022-04). Siemens prints the characteristic digits on page 16/2; the pole and current codes are the rows and tables of the ordering pages.

Series (page 16/23)

SeriesTripping characteristicsPolesOrdering pages
5SY4A, B, C, D1, 1+N, 2, 3, 3+N, 416/13, 16/14
5SY6B, C1, 1+N, 2, 3, 3+N, 416/15, 16/16
5SY5B, C (AC/DC range: 277 V AC or 250 V DC 1-pole, 480 V AC or 500 V DC 2-pole, p.16/18)1, 216/18
5SP4B, C, D1, 2, 3, 416/17

Siemens notes that “The only difference between 5SY4 and 5SY6 is the IEC 60898-1 Interrupting Rating … However, UL Interrupting ratings are the same for 5SY4 and 5SY6” (page 16/15).

Codes

PositionMeaningPage
-5 / -6 / -7 / -8Tripping characteristic A / B / C / D16/2
pole digit1 = 1-pole; 5 = 1-pole + N; 2 = 2-pole; 3 = 3-pole; 6 = 3-pole + N; 4 = 4-pole (the table each number is printed in)16/13, 16/14
current codeMostly the amps (10 = 10 A, 63 = 63 A), with these exceptions printed in the tables: 14 = 0.3 A, 05 = 0.5 A, 01 = 1 A, 15 = 1.6 A, 11 = 5 A, 18 = 15 A; on the 5SP4, 80 = 80 A, 91 = 100 A, 92 = 125 A16/13, 16/17

Siemens page 16/15 prints the 5SY6 single-pole-plus-neutral B characteristic numbers out of line with their current rows — the 5SY6 506-6, for example, sits on the 2 A row — and lists the 5SY6 218-7 in both the single-pole-plus-neutral and the two-pole tables. Meisterline Controls files the 5SY6218-7 as single-pole plus neutral.

The table above names series rather than individual numbers, and the 5SY6 prints at the same curves and currents in the single-pole table, so it is not affected. Confirm the individual numbers against the catalog before ordering.

One number, segment by segment

PositionValueMeaningPage
Series5SY45SY4 supplementary protector, 70 mm mounting depth16/13
Pole digit22-pole table16/13
Current code1010 A row16/13
Characteristic-7Tripping characteristic C, magnetic trip point 5 to 10 times In16/2, 16/13

5SY4 210-7 is printed in the characteristic C column of the 2-pole table on page 16/13.

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Last updated 2026-10-28.