Siemens SENTRON 5ST3 Auxiliary Switches (AS) for MCB/RCCB/RCBO

Siemens 5ST3 auxiliary switches in 0.5 MW that signal the contact position of the mounted circuit protection device.

Key features

Signals the contact position of the mounted device
Low-power versions for switching small currents/voltages per EN 61131-2 (PLC inputs)
Versions with TEST button for testing control circuits without switching the device
For 5SL, 5SY, 5SP4, 5SP5 MCBs, 5SY17, 5SV RCCBs, 5SU1/5SV1 RCBOs, 5SV6 AFDDs and 5TL1/5TE8 switches
Contact load acc. to IEC/EN 62019 and IEC/EN 60947-5-1

Specifications

Series	SENTRON 5ST3 AS
Mounting width	0.5 MW (9 mm)
Conductor cross-section	0.5 … 2.5 mm²
Standards	IEC/EN 62019, IEC/EN 60947-5-1
Ambient temperature	-40 … +70 °C
Terminal torque	0.5 Nm
Source	Siemens Catalog LV 10 · 2026, p. 4/64-4/65

5SW3330

Contacts: 1 NO + 1 NC | For: 5SM3 (3P+N, 100/125 A) | Version: Standard

AccessoriesSiemens

1 product code available in this family

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Siemens SENTRON 5ST3 Auxiliary Switches (AS) for MCB/RCCB/RCBO

Brand Siemens·Accessories

Available part numbers (1)

5SW3330

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