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Circuit Breaker Accessories

Circuit Breaker Accessories are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many circuit breaker accessories. Mouser is an authorized distributor for many circuit breaker accessory manufacturers including Altech, Amphenol, AMP HEXSEAL, Eaton, E-T-A Circuit Breakers, Phoenix Contact, Siemens & more.

Please view our large selection of circuit breaker accessories below.

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Part #

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

EM12D-TIO-000-DC24V-40A-E
E-T-A
1: £122.76
3In Stock
New Product

Mfr. Part No.
EM12D-TIO-000-DC24V-40A-E

Mouser Part No
457-EM12DTIO24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

Datasheet

3In Stock

£122.76

£101.80

£94.86

£78.12

£72.54

Min.: 1
Mult.: 1

EM12-T

Breaker Modules

Supply Module

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

EM12D-TMB-000-DC24V-40A-E
E-T-A
1: £159.74
2In Stock
New Product

Mfr. Part No.
EM12D-TMB-000-DC24V-40A-E

Mouser Part No
457-EM12DTMB24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

Datasheet

2In Stock

£159.74

£132.39

£122.05

£100.83

Min.: 1
Mult.: 1

EM12-T

Breaker Modules

Supply Module

Circuit Breaker Accessories BRKR 3VA5/6 400A 3P LUG W/CVR 1W 2W

3VA93730JJ24
Siemens
1: £373.98
2In Stock

Mfr. Part No.
3VA93730JJ24

Mouser Part No
982-3VA93730JJ24

Siemens

Circuit Breaker Accessories BRKR 3VA5/6 400A 3P LUG W/CVR 1W 2W

Learn More

Datasheet

2In Stock

£373.98

£306.77

£298.52

View

Min.: 1
Mult.: 1

3VA

Terminals

Wire Connector

Circuit Breaker Accessories BREAKER 3VA6 TD300 ACTIVATE ETU, TRIP

3VA99770MA10
Siemens
1: £632.92
2In Stock
2Expected 20/02/2026

Mfr. Part No.
3VA99770MA10

Mouser Part No
982-3VA99770MA10

Siemens

Circuit Breaker Accessories BREAKER 3VA6 TD300 ACTIVATE ETU, TRIP

Learn More

Datasheet

2In Stock

2Expected 20/02/2026

£632.92

Min.: 1
Mult.: 1

3VA

Circuit Breaker Accessories AQB - L103 MAG ONLY W/ 2A2B AUX - UNREG

69D2660G25
Eaton Electrical
1: £13,522.06
30In Stock

Mfr. Part No.
69D2660G25

Mouser Part No
504-69D2660G25

Eaton Electrical

Circuit Breaker Accessories AQB - L103 MAG ONLY W/ 2A2B AUX - UNREG

30In Stock

£13,522.06

Min.: 1
Mult.: 1

Circuit Breaker Accessories 3 Ph Busbar 310.2mm 18Pin, 115A

3P16UL3/18
Altech
1: £53.74
193In Stock Restricted Availability

Mfr. Part No.
3P16UL3/18

Mouser Part No
845-3P16UL3/18

Altech

Circuit Breaker Accessories 3 Ph Busbar 310.2mm 18Pin, 115A

Learn More

Datasheet

193In Stock

£53.74

£44.58

£41.46

£34.55

View

Min.: 1
Mult.: 1

Restricted Availability

489

Busbars

3 Phase Busbar

Circuit Breaker Accessories BOOTSEAL 3/8 BLK SIL 200

1-1423696-5
TE Connectivity / P&B
1: £3.40
2,292In Stock

Mfr. Part No.
1-1423696-5

Mouser Part No
571-114236965

TE Connectivity / P&B

Circuit Breaker Accessories BOOTSEAL 3/8 BLK SIL 200

Datasheet

2,292In Stock

£3.40

£2.82

£2.60

£2.16

View

Min.: 1
Mult.: 1

W54

Boots

Silicone Rubber Protective Boot Bonded to Aluminum Nut for W54

Bulk

Circuit Breaker Accessories Mounting Socket - Screw Terminals - Two-way

12-J20-20
E-T-A
1: £10.67
252In Stock

Mfr. Part No.
12-J20-20

Mouser Part No
618-12-J20-20

E-T-A

Circuit Breaker Accessories Mounting Socket - Screw Terminals - Two-way

Datasheet

252In Stock

£10.67

£10.34

£8.21

£7.87

View

Min.: 1
Mult.: 1

Socket 12

Circuit Breaker Accessories MPR SURGE SUPPRESSOR

MPR-SS
L-Com
1: £91.41
4In Stock
New Product

Mfr. Part No.
MPR-SS

Mouser Part No
17-MPR-SS

New Product

L-Com

Circuit Breaker Accessories MPR SURGE SUPPRESSOR

4In Stock

£91.41

Min.: 1
Mult.: 1

Interconnect

Circuit Breaker Accessories 508, DM, 40A Supply Module, REX12D-T, Modbus

EM12D-TMB-000-DC24V-40A
E-T-A
1: £88.19
6In Stock

Mfr. Part No.
EM12D-TMB-000-DC24V-40A

Mouser Part No
457-2DTMB000DC24V40A

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, REX12D-T, Modbus

Datasheet

6In Stock

£88.19

£86.47

£81.77

£75.53

View

Min.: 1
Mult.: 1

Accessories

Supply Module

Circuit Breaker Accessories 508, DM, 40A Distribution Module, mid/right, GND - 0 V

EM12-T00-300-GND-40A
E-T-A
1: £23.07
6In Stock

Mfr. Part No.
EM12-T00-300-GND-40A

Mouser Part No
457-EM12T00300GND40A

E-T-A

Circuit Breaker Accessories 508, DM, 40A Distribution Module, mid/right, GND - 0 V

Datasheet

6In Stock

£23.07

£22.82

£21.25

£19.60

View

Min.: 1
Mult.: 1

Supply Module

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load

PM12-T02-00-LOAD-20A
E-T-A
1: £40.55
5In Stock

Mfr. Part No.
PM12-T02-00-LOAD-20A

Mouser Part No
457-PM12T0200LOAD20A

E-T-A

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load

Datasheet

5In Stock

£40.55

£40.54

£30.70

£29.95

View

Min.: 1
Mult.: 1

Potential Module

Circuit Breaker Accessories ETA Circuit Breakers

X22200503
E-T-A
1: £48.24
5In Stock

Mfr. Part No.
X22200503

Mouser Part No
457-X22200503

E-T-A

Circuit Breaker Accessories ETA Circuit Breakers

Datasheet

5In Stock

£48.24

£42.93

£41.26

£40.48

View

Min.: 1
Mult.: 1

Busbars

Signal Busbar

Circuit Breaker Accessories ESX10-T ACC- Busbar 3 unit 34.5mm

X22261134
E-T-A
1: £61.62
2In Stock

Mfr. Part No.
X22261134

Mouser Part No
457-X22261134

E-T-A

Circuit Breaker Accessories ESX10-T ACC- Busbar 3 unit 34.5mm

2In Stock

£61.62

£51.14

£49.08

£45.51

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories ESX10-T ACC- Busbar 4 unit 47mm

X22261147
E-T-A
1: £81.91
1In Stock

Mfr. Part No.
X22261147

Mouser Part No
457-X22261147

E-T-A

Circuit Breaker Accessories ESX10-T ACC- Busbar 4 unit 47mm

Datasheet

1In Stock

£81.91

£68.99

£65.71

£61.27

View

Min.: 1
Mult.: 1

Busbars

4 Unit Busbar

Circuit Breaker Accessories 4230 ACC Power Feed Terminal Block UL489

X4230-FBU50
E-T-A
1: £12.61
4In Stock

Mfr. Part No.
X4230-FBU50

Mouser Part No
457-X4230-FBU50

E-T-A

Circuit Breaker Accessories 4230 ACC Power Feed Terminal Block UL489

Datasheet

4In Stock

£12.61

£11.03

£10.08

£9.56

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories Transparent Lid for TK99-6

S1-125
Altech
1: £15.04
5In Stock

Mfr. Part No.
S1-125

Mouser Part No
845-S1125

Altech

Circuit Breaker Accessories Transparent Lid for TK99-6

5In Stock

£15.04

£13.55

£9.86

£8.84

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories RCD F200 SHNT TRP 12-60VAC/DC

F2C-A1
ABB
1: £135.97
5In Stock
New At Mouser

Mfr. Part No.
F2C-A1

Mouser Part No
894-F2C-A1

New At Mouser

ABB

Circuit Breaker Accessories RCD F200 SHNT TRP 12-60VAC/DC

5In Stock

£135.97

£112.75

£95.07

£84.22

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories BREAKER 3VA5 125 REAR SHIELD LONG 3P 1PC

3VA91310WJ30
Siemens
1: £62.35
1In Stock

Mfr. Part No.
3VA91310WJ30

Mouser Part No
982-3VA91310WJ30

Siemens

Circuit Breaker Accessories BREAKER 3VA5 125 REAR SHIELD LONG 3P 1PC

Datasheet

1In Stock

£62.35

£53.70

£52.00

£50.01

View

Min.: 1
Mult.: 1

3VA

Plates

Insulating Plate

Circuit Breaker Accessories BRKR 3VA1 160A 3P TRML COVER

3VA91530KB03
Siemens
1: £34.27
3In Stock

Mfr. Part No.
3VA91530KB03

Mouser Part No
982-3VA91530KB03

Siemens

Circuit Breaker Accessories BRKR 3VA1 160A 3P TRML COVER

Learn More

Datasheet

3In Stock

£34.27

£31.68

£30.33

£28.40

View

Min.: 1
Mult.: 1

3VA

Covers

Terminal Cover

Circuit Breaker Accessories BREAKER 3VA125,250 60 IN MAX FLEX CABLE

3VA92780CC30
Siemens
1: £520.24
1In Stock
3Expected 16/03/2026

Mfr. Part No.
3VA92780CC30

Mouser Part No
982-3VA92780CC30

Siemens

Circuit Breaker Accessories BREAKER 3VA125,250 60 IN MAX FLEX CABLE

Learn More

Datasheet

1In Stock

3Expected 16/03/2026

£520.24

£457.15

£429.46

Min.: 1
Mult.: 1

3VA

Cables

Bowden Cable

Circuit Breaker Accessories BRKR 3VA BOWDEN CBL 1.5M ACC

3VA99800VC30
Siemens
1: £281.02
1In Stock

Mfr. Part No.
3VA99800VC30

Mouser Part No
982-3VA99800VC30

Siemens

Circuit Breaker Accessories BRKR 3VA BOWDEN CBL 1.5M ACC

Datasheet

1In Stock

£281.02

£243.27

£239.94

View

Min.: 1
Mult.: 1

3VA

Cables

Bowden Cable

Circuit Breaker Accessories BREAKER 3VA 125A ENCLOSURE TYP 12

3VAE125N12
Siemens
1: £573.76
2In Stock

Mfr. Part No.
3VAE125N12

Mouser Part No
982-3VAE125N12

Siemens

Circuit Breaker Accessories BREAKER 3VA 125A ENCLOSURE TYP 12

Learn More

Datasheet

2In Stock

£573.76

£438.44

£427.34

View

Min.: 1
Mult.: 1

3VA

Circuit Breaker Enclosures

Type 12

Circuit Breaker Accessories REF16-S, 2216-S, terminal block, screw terminal, 1P

81Plus-UT01
E-T-A
1: £24.38
1In Stock
New At Mouser

Mfr. Part No.
81Plus-UT01

Mouser Part No
457-81PLUS-UT01

New At Mouser

E-T-A

Circuit Breaker Accessories REF16-S, 2216-S, terminal block, screw terminal, 1P

Datasheet

1In Stock

£24.38

£20.24

£18.66

£15.46

View

Min.: 1
Mult.: 1

Terminal Blocks

Socket

Circuit Breaker Accessories 508, DM, 40A Distribution Module Standard, without Aux, ATEX

EM12-T00-000-DC24V-40A-E
E-T-A
1: £32.73
5In Stock
New Product

Mfr. Part No.
EM12-T00-000-DC24V-40A-E

Mouser Part No
457-EM12T00DC24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Distribution Module Standard, without Aux, ATEX

Datasheet

5In Stock

£32.73

£27.15

£25.04

£20.99

View

Min.: 1
Mult.: 1

EM12-T

Breaker Modules

Supply Module

Circuit Breaker Accessories

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