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Siemens 5SY6203-7 — 2-Pole MCB (DIN Rail)

SENTRON 5SY6203-7 Miniature Circuit Breaker, 2-Pole, C-Curve

MPN5SY6203-7
Active

SENTRON 5SY6203-7, 2-pole miniature circuit breaker, C-curve, 400 V AC / 60 V DC, 6 kA (EN 60898) / 30 kA (IEC 60947-2).

$30.86Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY6203-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY6203-7 — Electrical
ParameterValue
Number of poles2
5SY6203-7 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY6203-7 — 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
5SY6203-7 — Environmental
ParameterValue
Pollution degree3
5SY6203-7 — Specifications
ParameterValue
At AC rated value400 V
According to EN 60898 rated value6 kA
With single-phase operation at AC rated value440 V
Energy Limitation Class3

Product details

Rated for 400 V AC (multi-phase or single-phase) and 60 V DC, with a maximum DC operating voltage of 72 V. The breaking capacity depends on the standard applied: 6 kA per EN 60898-1, 30 kA per IEC 60947-2, and 5 kA per UL 1077. The overvoltage category is III, and the pollution degree is 3, so it is rated for fixed installations in industrial environments where transient overvoltages are expected.

Mounting and integration notes

The IP20 rating applies only with connected conductors. The combined terminal design at both top and bottom accepts conductors from either side, and the supply cord position is unrestricted. Neutral conductor switching is not provided — this is a 2-pole breaker for line-side switching only. The sealable feature allows padlocking in the OFF position for lockout/tagout compliance.

Halogen-free and silicon-free construction. Energy limitation class 3. Suitable for mechanical engineering and industrial applications per the manufacturer's designation.

Frequently asked questions

What is the physical size of the 5SY6203-7?

Width is 36 mm (2 modular units), depth is 76 mm, installation depth is 70 mm, and height is 90 mm.

What compliance standards does it meet?

It complies with IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077. It is halogen-free and silicon-free.

MPN
5SY6203-7