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Siemens 5SY8632-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY8632-8 SENTRON MCB, 4P D 32A 30kA IEC

MPN5SY8632-8
Active

Siemens SENTRON, miniature circuit breaker, 4-pole 3P+N, D characteristic, 32 A rated, 30 kA breaking capacity IEC 60947-2, 72 x 90 x 76 mm.

Siemens 5SY8632-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY8632-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY8632-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC32 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Voltage typeAC
5SY8632-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity, per IEC 60947-230 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)5 kA
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingYes
Touch protectionYes
5SY8632-8 — 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
5SY8632-8 — 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

Product details

Rated current is 32 A at 45 °C, derating to 31.2 A at 50 °C and 30.37 A at 55 °C — so if the panel ambient runs hot, factor the derate.

Deployment context

The neutral is switched (3P+N), which is useful for TN-S systems where you want the neutral isolated during maintenance. Touch protection is built in.

Compliance and approvals

The 5SY8632-8 carries a UL 1077 and CSA C22.2 No. 235 supplementary protector listing at 5 kA — enough for North American panel applications where a full UL 489 branch breaker isn't required. Halogen-free and silicon-free construction, sealable for lockout/tagout. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz.

Frequently asked questions

What compliance documentation does Siemens provide for 5SY8632-8?

The breaker is designed to IEC 60947-2 (30 kA breaking capacity) and also carries UL 1077 / CSA C22.2 No. 235 supplementary protector ratings at 5 kA. It is halogen-free and silicon-free. Standard Siemens declarations (CE, UKCA, RoHS, REACH) apply; consult the product documentation for specific certificates.

Where can I buy 5SY8632-8?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — no stock count or lead-time number published here.

MPN
5SY8632-8