Skip to main content
Log in
Siemens 5SM3642-6KL — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3642-6KL SENTRON RCCB, 25A, 300mA, 4P Type A

MPN5SM3642-6KL

Siemens SENTRON 5SM3 series, RCCB, 4-pole type A, In 25 A, IΔn 300 mA, Un 400 V AC, N left, DIN rail mount.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SM3642-6KL — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3642-6KL — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SM3642-6KL — Mechanical
ParameterValue
Mounting positionany
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3642-6KL — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The Siemens 5SM3642-6KL is a SENTRON residual current operated circuit breaker (RCCB), 4-pole, type A, rated 25 A with a 300 mA tripping residual current at 400 V AC. It's an instantaneous design (no short-time delay), meaning it trips on the fault waveform itself without intentional delay — standard for general-purpose earth leakage protection on distribution boards.

Terminal torque spec is 2.5 to 3 N·m for the screw-type terminals, accepting solid or stranded copper from 1.5 mm² up to 25 mm².

The housing is finger and back-of-hand safe per the protection-against-electrical-shock rating. Short-circuit current rating is 10 kA, and it's rated for overvoltage category III. Surge current resistance is 1 kA. The design is silicon-free.

Frequently asked questions

Where can I buy 5SM3642-6KL and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What are the key ratings for 5SM3642-6KL?

4-pole type A RCCB, 25 A rated current, 300 mA residual trip, 400 V AC, 10 kA SCCR, instantaneous trip characteristic, DIN rail mount, terminals accept 1.5–25 mm² solid or stranded.

Will 5SM3642-6KL drop into a panel specified around 5SY4310-7CV?

No — the 5SY4310-7CV is a miniature circuit breaker (MCB), not an RCCB. This is a 4-pole residual current device; they serve different protection functions and are not drop-in interchangeable without rewiring the circuit.

MPN
5SM3642-6KL