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Siemens 5SY4608-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY4608-8 SENTRON MCB, 4P D 8A, 10kA

MPN5SY4608-8
Active

Siemens SENTRON 5SY4 series, 4-pole miniature circuit breaker, D tripping characteristic, 8 A rated current, 10 kA breaking capacity per EN 60898, 72 mm width.

Siemens 5SY4608-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4608-8 — Identification
ParameterValue
Type / order code5SY4
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4608-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC400 V
Rated current (In), AC8 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Rated voltage, DC (max.)72 V
Voltage typeAC
Rated frequency50/60 Hz
5SY4608-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity (Icn), per EN 6089810 kA
Rated breaking capacity, per IEC 60947-220 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)5 kA
Overvoltage categoryIII
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingYes
Touch protectionYes
5SY4608-8 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
SealableYes
5SY4608-8 — 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
5SY4608-8 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

The Siemens 5SY4608-8 is a 4-pole (3P+N) miniature circuit breaker from the SENTRON 5SY4 series, rated 8 A with a D tripping characteristic. On a 400 V AC line (50/60 Hz), the 10 kA breaking capacity per EN 60898 covers most commercial and light industrial panel faults; the IEC 60947-2 rating of 20 kA gives headroom for higher-fault installations where selectivity coordination demands it.

Mounting position is any; ambient range -40 to +70 °C with derating above 55 °C per the humidity curve (95% RH at 55 °C, tapering to 35% at 75 °C).

Frequently asked questions

Where can I buy 5SY4608-8 and get a price?

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 price and lead time.

What is the depth of 5SY4608-8?

76 mm depth, with an installation depth of 70 mm. Width is 72 mm (4 width units), height 90 mm.

What wire sizes does the 5SY4608-8 accept?

Solid and stranded copper from 0.75 mm² up to 35 mm² at both top and bottom combined terminals.

What compliance documentation does Siemens provide for 5SY4608-8?

The MCB carries approvals per EN 60898 (10 kA), IEC 60947-2 (20 kA AC / 15 kA DC), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens documentation includes RoHS and REACH declarations.

MPN
5SY4608-8