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Siemens 5SY8206-8 — 2-Pole MCB (DIN Rail)

Siemens 5SY8206-8 SENTRON MCB, 2-pole, D-curve, 50 kA IEC

MPN5SY8206-8
Active

Siemens SENTRON miniature circuit breaker, 2-pole, D-curve, 50 kA at 400 V AC (IEC 60947-2), 5 kA (UL 1077), 2 MW, IP20, halogen-free.

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

Specifications

5SY8206-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY8206-8 — Electrical
ParameterValue
Number of poles2
5SY8206-8 — Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY8206-8 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY8206-8 — Environmental
ParameterValue
Pollution degree3
5SY8206-8 — Specifications
ParameterValue
At AC rated value400 V
With single-phase operation at AC rated value440 V

Product details

It protects circuits against overload and short-circuit, and is rated for breaking capacities of 50 kA at 400 V AC per IEC 60947-2 and 5 kA per UL 1077.

Rated operational voltage is 400 V AC (multi-phase or single-phase up to 440 V), and 60 V DC (max 72 V). The DC rating of 15 kA per IEC 60947-2 covers battery-backed or rectifier-fed circuits. The 5 kA UL 1077 rating is for supplementary protection in North American panels; it is not a branch-circuit rated breaker under UL 489.

Mounting position is any orientation.

Frequently asked questions

What is the breaking capacity of 5SY8206-8?

It is rated 50 kA at 400 V AC per IEC 60947-2, 15 kA at DC per IEC 60947-2, and 5 kA per UL 1077.

What does the D-curve mean for this breaker?

The D tripping characteristic allows higher inrush currents (typically 10–20x rated current) before tripping, making it suitable for motor, transformer, and welding loads that draw a heavy start-up surge.

Where can I buy 5SY8206-8 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation is available for 5SY8206-8?

The breaker is certified to IEC / EN 60947-2 and UL 1077. It is halogen-free and silicon-free. The SENTRON series typically provides RoHS and REACH declarations on request.

MPN
5SY8206-8