The 5SL4203-7CC: The 10 kA breaking capacity at 400 V means this MCB can safely interrupt fault currents up to 10,000 A without welding its contacts or cascading failure upstream — a standard rating for commercial and light industrial distribution boards. At 3 A per pole, it protects a branch circuit drawing up to 3 A continuous; pair it with cable sized for that load and verify the upstream protective device coordinates for selectivity.
Siemens 5SL4203-7CC Miniature Circuit Breaker, 400V 10kA, 2-
MPN5SL4203-7CC
Active
Siemens 5SL4203-7CC, miniature circuit breaker, 400 V, 10 kA, 2-pole, C characteristic, 3 A, basic device.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Group code | P310 |
| Product group | 3823 |
| Product class | B: return restricted, please contact your Siemens partner/contact |
| Series | Basic Devices |
| Export control regulations | AL : N / ECCN : N |
| Compliance with the substance restrictions according to RoHS directive | Since: 01-06-13 |
Product details
Frequently asked questions
What compliance documentation does Siemens provide for 5SL4203-7CC?
RoHS compliance is confirmed since June 2013, and REACH Article 33 candidate-list information is available on request. Export controls are AL: N / ECCN: N.
Where can I buy 5SL4203-7CC and get current pricing?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for this order code.
MPN
5SL4203-7CC