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Siemens 5SY5214-7 — 2-Pole MCB (DIN Rail)

Siemens 5SY5214-7 SENTRON MCB, 2P C 0.3A 10kA

MPN5SY5214-7
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Siemens SENTRON 5SY5214-7 miniature circuit breaker, 2-pole, C-curve, 0.3 A rated current, 10 kA breaking capacity, 440 V DC rated voltage.

Siemens 5SY5214-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY5214-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentuniversal current
5SY5214-7 — Electrical
ParameterValue
Number of poles2
5SY5214-7 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY5214-7 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY5214-7 — Environmental
ParameterValue
Pollution degree3
5SY5214-7 — Specifications
ParameterValue
At AC rated value0.3 A
According to EN 60898 rated value10 kA
With single-phase operation at AC rated value440 V
Energy Limitation Class3

Product details

What this 0.3 A C-curve MCB is for

The Siemens SENTRON 5SY5214-7 is a 2-pole miniature circuit breaker rated at 0.3 A AC (0.28 A at 40 °C) with a C tripping characteristic and a 10 kA breaking capacity per IEC/EN 60898-2 and UL1077. That low current rating makes it a fit for protecting control transformers, signal circuits, or small instrumentation supplies inside a panel — not motor circuits.

This breaker is rated 0.3 A at 35 °C, but the thermal trip element derates as ambient climbs: 0.28 A at 40 °C, 0.27 A at 45 °C, 0.26 A at 50 °C, 0.25 A at 55 °C, and 0.24 A at 60 °C.

The breaker is 76 mm deep, 36 mm wide (2 modular units), and 90 mm tall. It uses the quick-assembly snap-on fastening to DIN rail, with combined top and bottom terminals for daisy-chaining. It's sealable, halogen-free, and silicon-free.

Frequently asked questions

Where can I buy 5SY5214-7?

We source and quote the 5SY5214-7 to order against an RFQ. Availability and current pricing are confirmed at quote time.

What is 5SY5214-7's depth and width?

The 5SY5214-7 has a depth of 76 mm and a width of 36 mm (2 modular units).

What standards does 5SY5214-7 comply with?

The 5SY5214-7 complies with IEC/EN 60898-2 and UL1077, with pollution degree 3 and overvoltage category III.

Will 5SY5214-7 drop into a panel specified around 5SY5240-7?

The 5SY5240-7 is a higher-current variant (40 A) in the same SENTRON 5SY series. Both share the same 2-pole, 2-module-width footprint and DIN-rail mounting, so mechanical fit is the same. The difference is the current rating and tripping curve — verify the load current before substitution.

MPN
5SY5214-7