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Siemens 5SY7208-8 — 2-Pole MCB (DIN Rail)

Siemens 5SY7208-8 SENTRON MCB, 2-Pole D-Curve 8A, 15kA

MPN5SY7208-8
Active

Siemens SENTRON 5SY7208-8 miniature circuit breaker, 2-pole, D tripping characteristic, 8 A rated current, 15 kA breaking capacity per EN 60898, 30 kA per IEC 60947-2.

Siemens 5SY7208-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY7208-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY7208-8 — Electrical
ParameterValue
Number of poles2
5SY7208-8 — Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY7208-8 — 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
5SY7208-8 — Environmental
ParameterValue
Pollution degree3

Product details

At 35 °C ambient the full 8 A is available; at 60 °C it derates to 6.43 A, so panel builders need to account for internal enclosure heat rise when loading adjacent breakers. Breaking capacity is 15 kA per EN 60898 and 30 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2. Under UL 1077 / CSA C22.2 No. 235 it carries 5 kA. For a European panel specified to IEC 60947-2, the 30 kA figure gives headroom for high-fault installations without cascading upstream. The 5 kA UL/CSA number means this is a supplementary protector in North American practice — not a branch-circuit rated device per UL 489.

The breaker is sealable, halogen-free, and silicon-free — relevant for clean-room or food-processing panels where outgassing must be controlled.

Frequently asked questions

How do I get current pricing and availability for 5SY7208-8?

The part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote to confirm current pricing and availability at the time of ordering.

What is 5SY7208-8's listed depth and width?

Depth is 76 mm overall (70 mm installation depth), width is 36 mm (2 modular units). These dimensions match the standard SENTRON 5SY series footprint.

Will 5SY7208-8 drop into a panel specified around 5SY7210-7CC without rewiring?

Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting, so the mechanical fit is identical. The difference is rating: 5SY7208-8 is 8 A D-curve, while 5SY7210-7CC is a different rating/curve. If the circuit load matches 8 A D-curve, no rewiring is needed; if the original design called for a higher current or different curve, the breaker must be reselected.

What compliance documentation does Siemens provide for 5SY7208-8?

The breaker carries ratings per EN 60898 (15 kA), IEC 60947-2 (30 kA AC, 15 kA DC), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens declarations of conformity and material compliance (RoHS, REACH) are available on request.

MPN
5SY7208-8