ABB, Type B, 250 V dc DC

View all MCBs

Subtotal (1 unit)*

£120.04

(exc. VAT)

£144.05

(inc. VAT)

Add to Basket
Select or type quantity
Stocked by manufacturer
  • Ready to ship from 15 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£120.04

*price indicative

RS Stock No.:
178-128
Mfr. Part No.:
2CCS573001R0085 S403M-B8
Brand:
ABB
Find similar products by selecting one or more attributes.
Select all

Brand

ABB

Tripping Characteristics

Type B

COO (Country of Origin):
CH

ABB S400M Series MCB, 3 Poles, 8A Current Rating - S403M-B8


This MCB is a miniature circuit breaker designed for circuit protection in both commercial and industrial applications. With a current rating of 8A and a breaking capacity of 10kA, it provides overload and short circuit protection. The compact dimensions of 54mm in width, 91mm in length, and 75mm in depth make it suitable for DIN rail mounting.

Features & Benefits


• Type B circuit breaker provides protection for general applications

• Combines thermal and electromechanical tripping mechanisms for protection

• Overload protection ensures circuit safety during high current events

• Flexible mounting options enhance installation versatility

Applications


• Utilised in commercial electrical distribution systems

• Suitable for industrial environments requiring robust circuit protection

• Functions effectively in automation and electronics sectors

Can it protect against high voltage surges?


Yes, this device is rated for 230V and 400V AC, managing high voltage surges effectively.

Is it suitable for modular installations?


Yes, it is designed for easy DIN rail mounting, ideal for modular systems.

Will it operate under extreme temperatures?


It operates efficiently in ambient temperatures ranging from -25°C to 60°C.

Related links