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Siemens 5SY8610-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY8610-8 SENTRON MCB, 4P D-curve 10 A 400 V

MPN5SY8610-8
Active

Siemens SENTRON miniature circuit breaker, 4-pole D-curve, 10 A rated at 400 V AC, 40 kA breaking capacity per IEC 60947-2, 4 modular width units, IP20 with connected conductors.

Siemens 5SY8610-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY8610-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY8610-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC400 V
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Voltage typeAC
5SY8610-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity, per IEC 60947-240 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
5SY8610-8 — 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
5SY8610-8 — 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

What this D-curve 4-pole MCB is for

The Siemens 5SY8610-8 is a SENTRON miniature circuit breaker with a D tripping characteristic, 4 poles (3P+N), rated 10 A at 400 V AC.

Mounting position is any — horizontal, vertical, upside-down, the mechanism works the same. IP20 with conductors connected — fine inside a closed panel, not for wet areas.

Thermal derating — real-world current

The 10 A rating is at 45 °C ambient. At 50 °C it's 9.75 A; at 55 °C it's 9.49 A. The surrounding temperature influence curve goes to 95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C. Halogen-free and silicon-free construction, sealable, with touch protection on the terminals.

Frequently asked questions

What is the breaking capacity of the 5SY8610-8?

40 kA at 400 V AC per IEC 60947-2, 15 kA at DC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235.

Where can I buy the 5SY8610-8?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

What compliance documentation does Siemens provide for the 5SY8610-8?

The part carries the SENTRON brand and is designed to IEC 60947-2, UL 1077, and CSA C22.2 No. 235 standards. RoHS, REACH, and other EU declarations are standard with the brand. Specific certificate copies can be requested at quote time.

MPN
5SY8610-8