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DORMAN SMITH

DORMAN SMITH 20 AMP TYPE 3 M9 MCB CIRCUIT BREAKER LOADLIMITER LLR 20T3

DORMAN SMITH 20 AMP TYPE 3 M9 MCB CIRCUIT BREAKER LOADLIMITER LLR 20T3

£9.99

  • Item Condition:Used
  • SKU:10760
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DORMAN SMITH 20 AMP TYPE 3 M9 MCB CIRCUIT BREAKER S203

DORMAN SMITH 20 AMP TYPE 3 M9 MCB CIRCUIT BREAKER S203

£11.99

  • Item Condition:Used
  • SKU:10871
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DORMAN SMITH 20 AMP TYPE 3 M9 TRIPLE POLE MCB CIRCUIT BREAKER AT203

DORMAN SMITH 20 AMP TYPE 3 M9 TRIPLE POLE MCB CIRCUIT BREAKER AT203

£39.95

  • Item Condition:Used
  • SKU:10709
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DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER 288/500V LOADMASTER

DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER 288/500V LOADMASTER

£8.95

  • Item Condition:Used
  • SKU:13105
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DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER 288/500V LOADMASTER LM20

DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER 288/500V LOADMASTER LM20

£13.00

  • Item Condition:New
  • SKU:10863
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DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER LOADMASTER

DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER LOADMASTER

£8.95

  • Item Condition:Used
  • SKU:911
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DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER LOADMASTER LM20

DORMAN SMITH 20 AMP TYPE 4 3kA MCB CIRCUIT BREAKER LOADMASTER LM20

£13.00

  • Item Condition:New
  • SKU:10858
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DORMAN SMITH 20 AMP TYPE 4 3kA TRIPLE POLE MCB CIRCUIT BREAKER LOADMASTER

DORMAN SMITH 20 AMP TYPE 4 3kA TRIPLE POLE MCB CIRCUIT BREAKER LOADMASTER

£19.99

  • Item Condition:Used
  • SKU:3320
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DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA

DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA

£233.30

  • Item Condition:Used
  • SKU:5054
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DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA LLBAAT200

DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA LLBAAT200

£339.95

  • Item Condition:Used
  • SKU:8043
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DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA WHITE

DORMAN SMITH 200 AMP 25kA TRIPLE POLE MCCB LOADLINE AA WHITE

£259.95

  • Item Condition:Used
  • SKU:4386
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DORMAN SMITH 200 AMP MCCB LOADLINE AA

DORMAN SMITH 200 AMP MCCB LOADLINE AA

£99.95

  • Item Condition:Used
  • SKU:13802
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DORMAN SMITH 200 AMP SWITCH DISCONNECTOR LOADLINE AA LLSAA200

DORMAN SMITH 200 AMP SWITCH DISCONNECTOR LOADLINE AA LLSAA200

£59.95

  • Item Condition:Used
  • SKU:4890
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DORMAN SMITH 200 AMP TRIPLE POLE MAIN SWITCH DISCONNECTOR LOADLINE AM

DORMAN SMITH 200 AMP TRIPLE POLE MAIN SWITCH DISCONNECTOR LOADLINE AM

£209.99

  • Item Condition:Used
  • SKU:10959
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DORMAN SMITH 200 AMP TRIPLE POLE SWITCH DISCONNECTOR MCCB LOADLINE AA

DORMAN SMITH 200 AMP TRIPLE POLE SWITCH DISCONNECTOR MCCB LOADLINE AA

£184.22

  • Item Condition:Used
  • SKU:4886
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DORMAN SMITH 25 AMP 25kA MCCB LOADLINE AA LLBAA25

DORMAN SMITH 25 AMP 25kA MCCB LOADLINE AA LLBAA25

£23.79

  • Item Condition:Used
  • SKU:7739
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DORMAN SMITH 25 AMP 25kA TRIPLE POLE MCCB LOADLINE AA

DORMAN SMITH 25 AMP 25kA TRIPLE POLE MCCB LOADLINE AA

£39.95

  • Item Condition:Used
  • SKU:10966
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DORMAN SMITH 25 AMP CURVE B 10kA MCB CIRCUIT BREAKER X1PB25

DORMAN SMITH 25 AMP CURVE B 10kA MCB CIRCUIT BREAKER X1PB25

£8.95

  • Item Condition:Used
  • SKU:10799
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DORMAN SMITH 25 AMP CURVE B 10kA TRIPLE POLE MCB CIRCUIT BREAKER AT25B BC

DORMAN SMITH 25 AMP CURVE B 10kA TRIPLE POLE MCB CIRCUIT BREAKER AT25B BC

£39.95

  • Item Condition:Used
  • SKU:10716
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DORMAN SMITH 25 AMP CURVE C 10kA TRIPLE POLE MCB CIRCUIT BREAKER 400V AT25C

DORMAN SMITH 25 AMP CURVE C 10kA TRIPLE POLE MCB CIRCUIT BREAKER 400V AT25C

£34.95

  • Item Condition:Used
  • SKU:2741
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Dorman Smith
Keep your specialized distribution boards, commercial installations, and heavy-duty industrial power networks running safely with our immediately available stock of genuine Dorman Smith circuit protection components. As dedicated UK electrical supply experts, we specialize in sourcing both current and rare or obsolete modules, allowing you to find the exact replacements you need without facing costly panel retrofits.
Our online Dorman Smith catalog is updated regularly and designed to accommodate a diverse range of configurations, including:
  • Dorman Smith MCBs: High-quality miniature circuit breakers tracking single-pole, double-pole, and triple-pole variants across extensive historic and modern lines—including Loadmaster, Loadlimiter (LLR), Series 15, and classic AS, K, and X product series spanning 1A to 70A.
  • Dorman Smith MCCBs: High-capacity moulded case circuit breakers engineered for high-integrity commercial power distribution, featuring the premium Loadline collection (Type AA, YA2, YA3, and YA3J lines) scaling up to heavy-duty 800 Amp benchmarks.
  • Dorman Smith RCBOs & RCDs: Comprehensive earth-leakage protection modules available right now, including multi-pole RCCBs and double-pole RCBOs from the GR, KR1, KR2, and XR series lines across Type A and Type AC safety configurations.
  • Main Switches & Control Gear: Robust double-pole, triple-pole, and four-pole switch disconnectors up to 250 Amp alongside heavy-duty modular contactors with standard 230V and 240V coil specifications.
  • Advanced Circuit Safety: Reliable fault tracking across varied breaking capacity metrics (ranging from 3kA, 10kA, 25kA, up to industrial 65kA parameters) and distinct tripping characteristics (Curves B, C, D, and legacy Type 2, 3, and 4 curves).
Why Choose Circuit Breaker Specialists?
  • Free UK Delivery: Enjoy cost-free shipping automatically applied on every single order.
  • Same Working Day Dispatch: Complete your online checkout before 3PM, and we dispatch your package today.
  • Next Working Day Shipping: Urgent delivery options available at checkout to minimize system downtime during critical faults.