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Siemens 5SU1654-7KV20 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1654-7KV20 FI/LS Protector, Type A, 300mA, 10kA,

MPN5SU1654-7KV20

Siemens 5SU1654-7KV20, FI/LS-PROTECTOR TYPE A (PSE/SSF), D=70MM IFN 300MA, 10KA, 1+N-POLE C 20A.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Product details

The Siemens 5SU1654-7KV20 is a combined residual-current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' terminology. It integrates Type A residual current detection at 300 mA with a 1+N-pole thermal-magnetic overcurrent trip characteristic C rated at 20 A, all in a 70 mm wide housing.

The 70 mm module width (4 TE on a standard DIN rail) occupies four 18 mm pitch units in the distribution board. Plan for this when laying out multi-pole RCBO combinations in a crowded enclosure — the 1+N-pole format saves one module width versus a 2-pole device for the same single-phase protection scheme.

Frequently asked questions

Where can I buy 5SU1654-7KV20 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

What is 5SU1654-7KV20's listed description?

The official description is FI/LS-PROTECTOR TYPE A (PSE/SSF), D=70MM IFN 300MA, 10KA, 1+N-POLE C 20A.

What does the Type A and 300 mA rating mean for installation?

Type A residual current detection handles pulsating DC fault currents (typical from rectifiers, VFDs, or switched-mode supplies) that a basic Type AC device would miss. The 300 mA sensitivity is the standard for fire protection in many European installation standards — it allows for leakage from long cable runs and equipment filters without nuisance tripping, while still providing arc-fault protection.

MPN
5SU1654-7KV20