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Siemens 5SY4632-8 — 4-Pole MCB (DIN Rail)

Siemens SENTRON 5SY4632-8 MCB, D-curve, 32 A, 4-pole, 10/20

MPN5SY4632-8
Active

Siemens SENTRON 5SY4632-8 miniature circuit breaker, D tripping characteristic, 32 A rated, 3P+N, 4 poles, breaking capacity 10 kA per EN 60898 / 20 kA per IEC 60947-2, IP20, -40 to 75 °C.

$66.04Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY4632-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4632-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated voltage, AC (multi-phase)440 V
5SY4632-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
5SY4632-8 — 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
5SY4632-8 — 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
5SY4632-8 — Performance
ParameterValue
Power loss per pole, AC (hot state, at In)2.1 W

Product details

The Siemens SENTRON 5SY4632-8 is a 4-pole miniature circuit breaker (3P+N) with a D tripping characteristic, rated 32 A at AC, designed for branch-circuit protection in industrial and commercial panels per IEC/EN 60898-1 and IEC/EN 60947-2, with UL1077 recognition for supplementary protection in North American installations.

Breaking capacity is 10 kA per EN 60898 and 20 kA per IEC 60947-2; at DC per IEC 60947-2 it is 15 kA. That 20 kA figure gives headroom for industrial panels with high fault-current availability — the 10 kA rating is the lower bound for domestic/commercial coordination. Rated current derates with ambient temperature: 32 A at 35 °C, 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.

Fastens via the quick-assembly system; mounting position is any orientation.

Frequently asked questions

What is the breaking capacity of 5SY4632-8?

10 kA per EN 60898, 20 kA per IEC 60947-2, and 15 kA at DC per IEC 60947-2.

What is the D-curve trip range on this breaker?

Magnetic trip operates at 10 to 20 times rated current (320 to 640 A), suited for high-inrush loads like motor starters and transformers.

Where can I buy 5SY4632-8?

Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

Does 5SY4632-8 comply with UL and IEC standards?

It is designed to IEC/EN 60898-1, IEC/EN 60947-2, and UL1077 for supplementary protection.

MPN
5SY4632-8