BOM / RFQ

Siemens 5SM1644-6BA — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM1644-6BA FI Protector Type A, 40A 4P 0.3A 400V

Q: What is the 5SM1644-6BA rated current and voltage?

It is rated 40 A at 400 V, 4-pole, with a residual operating current of 0.3 A (Type A).

Q: Where can I buy the 5SM1644-6BA?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN5SM1644-6BA

Siemens 5SM1644-6BA FI PROTECTOR>N< Type A (PSE/SSF), 40A 4-pole, IΔn 0.3A, 400V, 4TE, D=55mm.

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

Product details

The Siemens 5SM1644-6BA is a 4-pole FI (residual current) protector, Type A, rated 40 A at 400 V with a rated residual operating current (IΔn) of 0.3 A. It occupies 4 module spaces (4TE) on a DIN rail and has a width of 55 mm.

Frequently asked questions

What is the 5SM1644-6BA rated current and voltage?

It is rated 40 A at 400 V, 4-pole, with a residual operating current of 0.3 A (Type A).

Where can I buy the 5SM1644-6BA?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.