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Siemens 5SQ2370-0KA50 — Miniature Circuit Breakers (MCB)

SENTRON 5SQ2370-0KA50 MCB, 3P C-curve 50 A, 3 kA

MPN5SQ2370-0KA50

SENTRON 5SQ2370-0KA50, 3-pole MCB, C-curve 50 A, 3 kA breaking capacity at 400 V AC, 50 Hz, IP20.

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

5SQ2370-0KA50 — Ratings
ParameterValue
Overvoltage category3
5SQ2370-0KA50 — Other specifications
ParameterValue
Poles3
Type of voltageAC/DC
Installation depth55 mm
Degree of pollution3
Protection class IPIP20
Energy limiting class3
Number of width units3
Number of poles (Note)3P
Circuit-breaker (Design)5SQ
Current (at AC)50 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

The SENTRON 5SQ2370-0KA50 is a 3-pole miniature circuit breaker (MCB) in the 5SQ series, rated 50 A with a C tripping curve and a 3 kA breaking capacity per EN 60898 at 400 V AC, 50 Hz.

Panel fit and environment

Rated IP20, so it's for dry indoor panels only; no washdown or outdoor exposure. No neutral switching (3P, not 3P+N); the neutral bar passes through unswitched.

Listed as current production (lifecycle stage: current). No obsolescence notice or last-time-buy date on record. For current pricing and availability, submit an RFQ — the part is sourced through independent distribution and quoted to order. No official successor exists because none is needed; this is the active variant.

Frequently asked questions

What is the number of poles on 5SQ2370-0KA50?

3 poles (3P), with no neutral pole switching.

What type of voltage does 5SQ2370-0KA50 accept?

AC/DC — the supply voltage at AC is rated 400 V, 50 Hz.

Will 5SQ2370-0KA50 drop into a panel specified around 5SQ2370-2YA04 without rewiring?

Yes — same 3-pole, same C-curve, same 3 kA breaking capacity, same 55 mm depth and 3 width units. The only difference is the current rating: 50 A vs 4 A. If the panel's load and upstream protection are sized for 50 A, it's a direct mechanical swap.

MPN
5SQ2370-0KA50