Skip to main content
Log in
Siemens 5SN1 NG 4A — Miniature Circuit Breakers (MCB)

Siemens 5SN1 NG 4A Circuit Breaker, 4 A

MPN5SN1 NG 4A

Siemens 5SN1 NG 4A, miniature circuit breaker, rated current 4 A, current lifecycle stage.

$59.28Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SN1 NG 4A — Specifications
ParameterValue
Current4 A
Weight110

Product details

The 5SN1 NG 4A: At 110 g, this is a lightweight DIN-rail mount breaker. It drops into any standard Siemens 5SN1 distribution board or consumer unit without fuss — the 4 A rating handles lighting and small appliance circuits where you need the thermal-magnetic trip curve.

Alternate MPN 5SN1NG4A is the same part — just the code without spaces. If your BOM lists one or the other, they're interchangeable on the same rail.

Frequently asked questions

What's the key rating on this breaker?

Rated current is 4 A. That's the continuous load it's designed to carry without tripping, and the threshold for its thermal-magnetic protection.

Does 5SN1NG4A fit the same panel?

Yes, 5SN1NG4A is the same product — just the order code without spaces. No rewiring or rail change needed.

MPN
5SN1 NG 4A