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Siemens 5SQ2370-0KA05 — Miniature Circuit Breakers (MCB)

Siemens SENTRON 5SQ2370-0KA05 MCB, 3-pole C-curve 5A 400V

MPN5SQ2370-0KA05

Siemens SENTRON 5SQ series, miniature circuit breaker, 5SQ2370-0KA05, 3-pole, C-curve, 5 A, 400 V AC, 3 kA per EN 60898, IP20, 55 mm depth.

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

Specifications

5SQ2370-0KA05 — Ratings
ParameterValue
Overvoltage category3
5SQ2370-0KA05 — Other specifications
ParameterValue
Poles3
Type of voltageAC/DC
Installation depth55 mm
Protection class IPIP20
Energy limiting class3
Number of width units3
Number of poles (Note)3P
Circuit-breaker (Design)5SQ
Current (at AC)5 A
Tripping characteristic classC
Acc. to EN 60898 / rated value3 kA
Supply voltage (at AC)400 V
Supply voltage frequency50 Hz
Product function (neutral conductor switching)No

Product details

Siemens SENTRON 5SQ2370-0KA05 — 3-pole MCB, C-curve, 5 A

The Siemens SENTRON 5SQ2370-0KA05 is a 3-pole miniature circuit breaker rated at 5 A with a C tripping characteristic, designed for 400 V AC systems at 50 Hz. The IP20 finger-safe enclosure suits installation inside a distribution board or control panel — not for wet or washdown environments.

At 5 A rated current and 400 V AC, it handles single-phase or three-phase circuits up to that continuous load. The 3-pole configuration switches all three phases simultaneously with no neutral pole switching.

Panel integration

The IP20 protection class requires installation inside an enclosure with a door or cover — it is not rated for exposed mounting. Overvoltage category 3 and energy limiting class 3 indicate it is designed for fixed-installation distribution boards with coordination to downstream devices.

Frequently asked questions

What is the breaking capacity of 5SQ2370-0KA05?

The breaking capacity is 3 kA per EN 60898 at 400 V AC.

What is the tripping characteristic of this MCB?

It has a C tripping characteristic, meaning it trips between 5× and 10× the rated current of 5 A.

Where can I buy 5SQ2370-0KA05?

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

Will 5SQ2370-0KA05 drop into a panel specified for 5SQ2370-2YA04?

Yes, both share the same 3-pole DIN-rail footprint, 55 mm depth, IP20 rating, and 400 V AC rating. The difference is the current rating: 5 A on this unit versus 4 A on the 2YA04 variant. No rewiring is needed if the circuit load is within 5 A.

MPN
5SQ2370-0KA05