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Siemens 5SY8313-8 — 3-Pole MCB (DIN Rail)

Siemens 5SY8313-8 SENTRON MCB, 3P D 13 A, 30 kA IEC

MPN5SY8313-8
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Siemens SENTRON 5SY8313-8, 3-pole miniature circuit breaker, D tripping characteristic, 13 A rated current, 30 kA breaking capacity per IEC 60947-2.

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

Specifications

5SY8313-8 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Suitability for operationMechanical engineering / industry
5SY8313-8 — Protection
ParameterValue
Tripping characteristic (curve)D
Breaking capacity per IEC 60947-230 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Pollution degree3
5SY8313-8 — Electrical
ParameterValue
Rated current (AC)13 A
Rated voltage (AC, multi-phase)440 V
5SY8313-8 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodQuick assembly system
SealableYes
5SY8313-8 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturemax. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C

Product details

The 13 A rating holds at 45 °C ambient; at 50 °C it derates to 12.68 A, and at 55 °C to 12.34 A — so if your panel runs hot, the actual trip threshold drops. The D-curve trips magnetically between 10× and 20× In, which is the right range for motor-start and heavy inductive loads. For DC circuits, the breaking capacity sits at 15 kA per IEC 60947-2; for UL 1077 / CSA C22.2 No. 235 applications it's 5 kA — a different standard, so check which governs your install.

Depth is 76 mm, width 54 mm (3 modular units), height 90 mm. Installation depth 70 mm. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.

Frequently asked questions

What is the closest second-source to 5SY8313-8?

The closest functional sibling is the 5SY4140-7, but that carries a different rating and curve — verify your load before substituting. The 5SY8313-8 is a D-curve 13 A 3-pole; the 5SY4140-7 is a different variant in the same SENTRON family. They share the same DIN footprint and terminal layout, so a swap won't require rewiring, but the trip characteristic and amp rating must match the circuit.

What are the key dimensions of 5SY8313-8?

Depth 76 mm, width 54 mm (3 modular units), height 90 mm. Installation depth is 70 mm.

Where can I buy 5SY8313-8?

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

What compliance documentation is available for 5SY8313-8?

The part carries IEC 60947-2, UL 1077, and CSA C22.2 No. 235 ratings. It is halogen-free and silicon-free. Specific RoHS/REACH declarations are provided with the shipment documentation.

MPN
5SY8313-8