Circuit Breakers & Accessories

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Battery Management Systems

Eaton provides a wide portfolio of products for Battery Management Systems (BMS), including terminal blocks, fuses, supercapacitors, chokes, inductors, and more. Battery Management Systems monitor individual cells, system voltage, current, and temperature. When monitoring individual cells, the BMS balances voltages and regulates the current flow, and if the upper or lower voltage, current, or temperature limit is exceeded, the BMS temporarily disconnects the load or source. Eaton Battery Management Systems estimate the State of Health (SoH), State of Charge (SoC), State of Energy (SoE), and State of Power (SoP) in batteries.

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Types of Circuit Breakers & Accessories

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Part #

Circuit Breaker Accessories 4P COVER FOR SCREW CONNECTOR

NZM1-4-XKSA
Eaton Electrical
1: ¥27,879.9
1In Stock
New Product

Mfr. Part #
NZM1-4-XKSA

Mouser Part #
504-NZM1-4-XKSA

New Product

Eaton Electrical

Circuit Breaker Accessories 4P COVER FOR SCREW CONNECTOR

Datasheet

1In Stock

¥27,879.9

¥25,793.7

¥23,646

¥21,398.7

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Min.: 1
Mult.: 1

Circuit Breaker Accessories TERMINAL FOR JB,KB,& SERIES C J FRM BRKS

T250KB
Eaton Electrical
1: ¥14,963.9
1In Stock
New Product

Mfr. Part #
T250KB

Mouser Part #
504-T250KB

New Product

Eaton Electrical

Circuit Breaker Accessories TERMINAL FOR JB,KB,& SERIES C J FRM BRKS

1In Stock

¥14,963.9

¥10,301.5

¥9,378

¥8,560.8

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Min.: 1
Mult.: 1

Circuit Breaker Accessories PDG2 TERMINAL (STEEL), 100A, 14-1/0, 1P

PDG2X1T100
Eaton Electrical
1: ¥5,039.5
1In Stock
New Product

Mfr. Part #
PDG2X1T100

Mouser Part #
504-PDG2X1T100

New Product

Eaton Electrical

Circuit Breaker Accessories PDG2 TERMINAL (STEEL), 100A, 14-1/0, 1P

Datasheet

1In Stock

¥5,039.5

¥4,180.7

¥3,856.8

¥3,195.8

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Min.: 1
Mult.: 1

Circuit Breakers MINI C.B. type 3 7.5 AMP

CB233-7-1-2
Bussmann / Eaton
1: ¥4,355.1
49In Stock

Mfr. Part #
CB233-7-1-2

Mouser Part #
504-CB233-7-1-2

Bussmann / Eaton

Circuit Breakers MINI C.B. type 3 7.5 AMP

Datasheet

49In Stock

¥4,355.1

¥3,614.3

¥3,408.4

¥2,873.5

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Min.: 1
Mult.: 1

Circuit Breakers MAXI CIRCUIT BREAKER

19450-01M
Bussmann / Eaton
1: ¥2,001.5
265In Stock

Mfr. Part #
19450-01M

Mouser Part #
504-19450-01M

Bussmann / Eaton

Circuit Breakers MAXI CIRCUIT BREAKER

Datasheet

265In Stock

¥2,001.5

¥1,350.4

¥1,127.8

¥958.4

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Min.: 1
Mult.: 1

Circuit Breaker Accessories CUP WASHER

16-934-11
Eaton Electrical
1: ¥2,848.6
5In Stock
New Product

Mfr. Part #
16-934-11

Mouser Part #
504-16-934-11

New Product

Eaton Electrical

Circuit Breaker Accessories CUP WASHER

Datasheet

5In Stock

¥2,848.6

¥2,528

¥2,317.1

¥1,999.8

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Min.: 1
Mult.: 1

Circuit Breakers C/B MARINE RATED 40A

187060P-03-1
Bussmann / Eaton
1: ¥12,246.6
55In Stock

Mfr. Part #
187060P-03-1

Mouser Part #
504-187060P-03-1

Bussmann / Eaton

Circuit Breakers C/B MARINE RATED 40A

Datasheet

55In Stock

¥12,246.6

¥10,160.3

¥9,449.4

¥7,527.7

¥7,501.1

Min.: 1
Mult.: 1

Circuit Breaker Accessories Clamshell - Ground Bar Kit - 14 Terminal

GBK14CS
Eaton Electrical
1: ¥8,417.9
4In Stock
New Product

Mfr. Part #
GBK14CS

Mouser Part #
504-GBK14CS

New Product

Eaton Electrical

Circuit Breaker Accessories Clamshell - Ground Bar Kit - 14 Terminal

Datasheet

4In Stock

¥8,417.9

¥6,982.8

¥6,511.1

¥5,810.2

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Min.: 1
Mult.: 1

Circuit Breakers CIRCUIT BREAKER TYPE III 150A

285150F-121-S
Bussmann / Eaton
1: ¥5,939.7
73In Stock

Mfr. Part #
285150F-121-S

Mouser Part #
504-285150F-121-S

Bussmann / Eaton

Circuit Breakers CIRCUIT BREAKER TYPE III 150A

Datasheet

73In Stock

¥5,939.7

¥5,378.3

¥4,725.5

¥4,310.3

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Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

121A30-A2M-WB
Bussmann / Eaton
1: ¥847.1
188In Stock

Mfr. Part #
121A30-A2M-WB

Mouser Part #
504-121A30-A2M-WB

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

188In Stock

¥847.1

¥780.7

¥752.4

¥586.3

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Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

121A30-B4P
Bussmann / Eaton
1: ¥827.2
103In Stock

Mfr. Part #
121A30-B4P

Mouser Part #
504-121A30-B4P

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

103In Stock

¥827.2

¥752.4

¥727.5

¥571.4

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Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

121B20-A2P-KA
Bussmann / Eaton
1: ¥807.2
222In Stock

Mfr. Part #
121B20-A2P-KA

Mouser Part #
504-121B20-A2P-KA

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

222In Stock

¥807.2

¥735.8

¥709.2

¥558.1

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Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

122A20-00M-KA
Bussmann / Eaton
1: ¥1,046.4
289In Stock

Mfr. Part #
122A20-00M-KA

Mouser Part #
504-122A20-00M-KA

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

289In Stock

¥1,046.4

¥968.4

¥933.5

¥725.9

View

Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP BREAKER

124A10-B2M
Bussmann / Eaton
1: ¥847.1
8In Stock

Mfr. Part #
124A10-B2M

Mouser Part #
504-124A10-B2M

Bussmann / Eaton

Circuit Breakers SHORTSTOP BREAKER

Datasheet

8In Stock

¥847.1

¥780.7

¥752.4

¥586.3

View

Min.: 1
Mult.: 1

Circuit Breakers MAXI CIRCUIT BREAKER

19210-02M
Bussmann / Eaton
1: ¥1,534.8
138In Stock

Mfr. Part #
19210-02M

Mouser Part #
504-19210-02M

Bussmann / Eaton

Circuit Breakers MAXI CIRCUIT BREAKER

Datasheet

138In Stock

¥1,534.8

¥1,433.4

¥1,386.9

¥1,068

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Min.: 1
Mult.: 1

Circuit Breakers CIRCUIT BREAKER TYPE I 25A

21125-00
Bussmann / Eaton
1: ¥878.7
120In Stock
250Expected 11/30/2026

Mfr. Part #
21125-00

Mouser Part #
504-21125-00

Bussmann / Eaton

Circuit Breakers CIRCUIT BREAKER TYPE I 25A

Datasheet

120In Stock

250Expected 11/30/2026

¥878.7

¥681

¥632.8

¥573

View

Min.: 1
Mult.: 1

Circuit Breakers ATC CIRCUIT BREAKER - TYPE2 - 20A

22220-200
Bussmann / Eaton
1: ¥990
210In Stock

Mfr. Part #
22220-200

Mouser Part #
504-22220-200

Bussmann / Eaton

Circuit Breakers ATC CIRCUIT BREAKER - TYPE2 - 20A

Datasheet

210In Stock

¥990

¥916.9

¥883.7

¥687.7

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Min.: 1
Mult.: 1

Circuit Breakers TYPE III 50A MID RANGE CIRCUIT BREAKER

25450-B-2
Bussmann / Eaton
1: ¥5,511.2
34In Stock

Mfr. Part #
25450-B-2

Mouser Part #
504-25450-B-2

Bussmann / Eaton

Circuit Breakers TYPE III 50A MID RANGE CIRCUIT BREAKER

Datasheet

34In Stock

¥5,511.2

¥4,572.7

¥4,218.9

¥3,041.3

View

Min.: 1
Mult.: 1

Circuit Breakers MINI CB TYPE II

CB212-30
Bussmann / Eaton
1: ¥10,020.8
6In Stock

Mfr. Part #
CB212-30

Mouser Part #
504-CB212-30

Bussmann / Eaton

Circuit Breakers MINI CB TYPE II

Datasheet

6In Stock

¥10,020.8

¥8,313.3

¥6,672.2

¥6,652.3

Min.: 1
Mult.: 1

Circuit Breakers 25A TYPE III ATC BLADE CIRC BREAK

CB227-25
Bussmann / Eaton
1: ¥5,044.5
5In Stock

Mfr. Part #
CB227-25

Mouser Part #
504-CB227-25

Bussmann / Eaton

Circuit Breakers 25A TYPE III ATC BLADE CIRC BREAK

Datasheet

5In Stock

¥5,044.5

¥4,185.7

¥3,898.4

Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

122A15-00M-KA
Bussmann / Eaton
1: ¥1,046.4
3In Stock

Mfr. Part #
122A15-00M-KA

Mouser Part #
504-122A15-00M-KA

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

3In Stock

¥1,046.4

¥968.4

¥933.5

¥725.9

View

Min.: 1
Mult.: 1

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

123A10-B2P-HB
Bussmann / Eaton
1: ¥999.9
119In Stock

Mfr. Part #
123A10-B2P-HB

Mouser Part #
504-123A10-B2P-HB

Bussmann / Eaton

Circuit Breakers SHORTSTOP CIRCUIT BREAKER

Datasheet

119In Stock

¥999.9

¥926.8

¥893.6

¥694.3

View

Min.: 1
Mult.: 1

Circuit Breakers ATC CIRCUIT BREAKER - TYPE1 - 7.5A

22175-000
Bussmann / Eaton
1: ¥888.6
188In Stock

Mfr. Part #
22175-000

Mouser Part #
504-22175-000

Bussmann / Eaton

Circuit Breakers ATC CIRCUIT BREAKER - TYPE1 - 7.5A

Datasheet

188In Stock

¥888.6

¥818.9

¥789

¥614.6

View

Min.: 1
Mult.: 1

Circuit Breakers ATC CIRCUIT BREAKER - TYPE2 - 10A

22210-200
Bussmann / Eaton
1: ¥990
241In Stock

Mfr. Part #
22210-200

Mouser Part #
504-22210-200

Bussmann / Eaton

Circuit Breakers ATC CIRCUIT BREAKER - TYPE2 - 10A

Datasheet

241In Stock

¥990

¥916.9

¥883.7

¥687.7

View

Min.: 1
Mult.: 1

Circuit Breakers 30A TYPE III ATC BLADE CIRC BREAK

CB227-30
Bussmann / Eaton
1: ¥5,044.5
13In Stock
10Expected 9/22/2026

Mfr. Part #
CB227-30

Mouser Part #
504-CB227-30

Bussmann / Eaton

Circuit Breakers 30A TYPE III ATC BLADE CIRC BREAK

Datasheet

13In Stock

10Expected 9/22/2026

¥5,044.5

¥4,185.7

¥3,898.4

Min.: 1
Mult.: 1