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Siemens 5SY7632-8 — 4-Pole MCB (DIN Rail)

Siemens SENTRON 5SY7632-8 MCB, D curve, 32 A, 4-pole

MPN5SY7632-8
Active

Siemens SENTRON 5SY7632-8 miniature circuit breaker, D tripping characteristic, 32 A rated current, 4-pole 3P+N, 15 kA per EN 60898, 25 kA per IEC 60947-2, 4 MW units.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY7632-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY7632-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated voltage, AC (multi-phase)440 V
5SY7632-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
5SY7632-8 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Fastening / mounting methodQuick assembly system
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY7632-8 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
5SY7632-8 — Performance
ParameterValue
Power loss per pole, AC (hot state, at In)2.1 W

Product details

Siemens SENTRON 5SY7632-8 — D-curve MCB for high-inrush loads

It's built for industrial panels where the load isn't purely resistive. Rated breaking capacity is 15 kA per EN 60898 and 25 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2. At 400 V AC, that SCCR covers most distribution boards downstream of a transformer. The 4-pole design (3P+N) includes switched neutral, so it's suited for TN-S or TN-C-S systems where the neutral needs isolation.

Full 32 A rating holds at 35 °C; above that, derate progressively — 30.46 A at 40 °C, 29.66 A at 45 °C, 28.86 A at 50 °C, 28 A at 55 °C, 27.14 A at 60 °C. In a crowded enclosure with multiple breakers ganged, factor in the ambient rise. It occupies 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth).

Siemens designates this for mechanical engineering and general industry — think machine tool cabinets, conveyor control panels, pump starter enclosures. The D curve and 4-pole switching make it a natural fit for three-phase motor branch circuits where the neutral is also switched.

Frequently asked questions

Where can I buy 5SY7632-8 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the quantity you need.

What is the 5SY7632-8 depth and width?

Depth is 76 mm, width is 72 mm (4 modular units), height is 90 mm. Installation depth is 70 mm.

How does 5SY7632-8 compare to 5SY4140-7?

The 5SY4140-7 is a 1-pole B-curve 40 A breaker — different pole count, curve, and current rating. The 5SY7632-8 is 4-pole D-curve 32 A. They share the same SENTRON platform and DIN-rail footprint, but the D curve and 4-pole switching make the 5SY7632-8 the right choice for three-phase motor circuits with switched neutral; the 5SY4140-7 is a single-pole general-purpose branch breaker. They are not drop-in replacements.

What compliance documentation is available for 5SY7632-8?

The breaker is halogen-free and silicon-free, and carries CE and UKCA marking for the European and UK markets. RoHS and REACH declarations are standard from Siemens. Pollution degree 3 and overvoltage category III are per IEC 60947-2.

MPN
5SY7632-8