Free UK Delivery On All Orders
Order Before 3PM For Same Working Day Dispatch
Next Working Day Delivery Available
All In Stock And Ready To Dispatch

SIEMENS

SIEMENS 4 AMP CURVE D 6kA MCB CIRCUIT BREAKER 5SX21 5SX2

SIEMENS 4 AMP CURVE D 6kA MCB CIRCUIT BREAKER 5SX21 5SX2

£6.95

  • Item Condition:Used
  • SKU:12011
SIEMENS 40 AMP 300mA DOUBLE POLE RCD RCCB 5SM1614-6

SIEMENS 40 AMP 300mA DOUBLE POLE RCD RCCB 5SM1614-6

£59.95

  • Item Condition:Used
  • SKU:7340
SIEMENS 40 AMP 30mA DOUBLE POLE RCD 5SZ3 241-3A

SIEMENS 40 AMP 30mA DOUBLE POLE RCD 5SZ3 241-3A

£29.99

  • Item Condition:Used
  • SKU:12067
SIEMENS 40 AMP 30mA DOUBLE POLE RCD RCCB TYPE AC 5SM1314-0

SIEMENS 40 AMP 30mA DOUBLE POLE RCD RCCB TYPE AC 5SM1314-0

£39.99

  • Item Condition:Used
  • SKU:12065
SIEMENS 40 AMP 30mA FOUR POLE RCCB 5SM1344-0

SIEMENS 40 AMP 30mA FOUR POLE RCCB 5SM1344-0

£64.94

  • Item Condition:Used
  • SKU:9154
SIEMENS 40 AMP 30mA FOUR POLE RCCB RCD TYPE AC 5SM3 344-0

SIEMENS 40 AMP 30mA FOUR POLE RCCB RCD TYPE AC 5SM3 344-0

£69.95

  • Item Condition:Used
  • SKU:12063
SIEMENS 40 AMP CURVE B 6kA 30mA DOUBLE POLE RCBO TYPE AC 5SU1 356-0DV40
SIEMENS 40 AMP CURVE C 10kA MCB CIRCUIT BREAKER 5SY41 5SY4140-7
SIEMENS 40 AMP MCCB

SIEMENS 40 AMP MCCB

£29.95

  • Item Condition:Used
  • SKU:10092
Displaying 181 to 200 (of 265 products)
Siemens
Keep your specialised distribution boards, commercial installations, and complex industrial networks running safely with our immediately available stock of genuine Siemens circuit protection components. As dedicated UK electrical supply experts, we specialise 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 Siemens catalog is updated regularly and designed to accommodate a diverse range of configurations, including:
  • Siemens MCBs: High-quality miniature circuit breakers tracking single-pole, double-pole, and triple-pole layouts across premium modern lines and legacy families—featuring the 5SX1, 5SX2, 5SX4, 5SY4, 5SY6, 5SP4, and classic 5SN1 hardware series scaling from fractional 0.3A up to high-capacity 125A profiles.
  • Siemens RCBOs & RCDs: Comprehensive earth-leakage devices featuring double-pole standalone RCBO options across the 5SU1, 5SU3, and 5SU9 product groups paired with double-pole and four-pole high-sensitivity RCCB blocks (such as the 5SM1, 5SM3, and 5SV3 ranges) scaling up to 80 Amp benchmarks.
  • Siemens MCCBs & Industrial Switchgear: High-capacity moulded case circuit breakers built for complex commercial engineering, featuring premium multi-pole 3VF, 3VT, 3VA1, and heavy-duty VL collections (including the VL160 and VL250 frameworks) tracking industrial limits up to 400 Amp.
  • Siemens Control Gear & Automation Components: Industrial-grade panel processing and motor management hardware, featuring SIRIUS 3RT contactors, 3RV motor protection circuit breakers, 3UA and 3RU overload relays, 3RP timing devices, 5TT contactors, and advanced Sinamics control units.
  • Main Switches & Wiring Accessories: Robust panel switch disconnectors up to 100A (featuring the 5TE7, 5TE8, and 5TL1 lines), traditional physical cartridge fuse holder carriers, matching long terminal covers, and continuous-duty voltage conversion modules.
  • Advanced Circuit Safety: Reliable fault tracking across varied breaking capacity benchmarks (from standard 3kA, 6kA, 10kA, up to industrial 25kA, 35kA, 40kA, and heavy-duty 70kA short-circuit parameters) and distinct tripping characteristics (Curves B, C, D, and legacy Type 3 or Curve G settings).
Why Choose Circuit Breaker Specialists?
  • Free UK Delivery: Enjoy cost-free shipping automatically applied on every single order across our entire catalog.
  • 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 minimise system downtime during critical faults.