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Siemens 5SQ2370-0KA16 — Miniature Circuit Breakers (MCB)

Siemens SENTRON 5SQ2370-0KA16 MCB, 3-Pole, C-Curve, 16A, 3kA

MPN5SQ2370-0KA16

Siemens SENTRON 5SQ2370-0KA16, miniature circuit breaker, 3-pole, C characteristic, 16 A, 400 V AC, 3 kA per EN 60898, IP20, 3 width units.

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

5SQ2370-0KA16 — Ratings
ParameterValue
Overvoltage category3

Product details

The Siemens SENTRON 5SQ2370-0KA16 is a 3-pole miniature circuit breaker rated 16 A at 400 V AC with a C tripping characteristic and 3 kA breaking capacity per EN 60898.

Three poles on a 400 V AC supply means it simultaneously opens all phases on a fault, which is standard for three-phase branch circuits.

Snap-on DIN rail mounting, 3 width units (each 18 mm typical), IP20 protected terminals. Accepts copper conductors sized for 16 A branch circuits. No neutral pole switching — the breaker interrupts phase conductors only.

Energy limiting class 3 means it restricts let-through energy to limit downstream damage during a short circuit.

Frequently asked questions

What is the breaking capacity of 5SQ2370-0KA16?

3 kA per EN 60898 at 400 V AC. That rating governs the maximum prospective fault current the breaker can safely interrupt. If your panel's available fault current exceeds 3 kA, you need a higher-rated device or a current-limiting upstream element.

Will 5SQ2370-0KA16 drop into a panel specified around 5SQ2370-2YA05?

Yes — same 3-pole, C-curve, 400 V AC, 3 kA, 3-width-unit DIN-rail footprint, IP20, pollution degree 3, and overvoltage category III. The only difference is the rated current: 16 A on this part versus 0.5 A on 5SQ2370-2YA05. No rewiring or panel modification needed if the branch circuit is sized for 16 A.

Where can I buy 5SQ2370-0KA16?

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 price and lead time.

MPN
5SQ2370-0KA16