Siemens SIRIUS 3TG10 Auxiliary Contactor, 4 NO, 230 V AC Coil, Screw Terminals 3TG1010-0AL2

In industrial control panels, the Siemens 3TG1010-0AL2 auxiliary contactor reliably switches auxiliary circuits, such as contactor coils, indicator lamps, or PLC inputs. With four normally open contacts and a 230 V AC coil, it is a compact solution for expanding control logic in motor starters, HVAC systems, and automation equipment.

Key specifications

• Contact configuration: 4 NO (normally open)
• Coil voltage: 230 V AC, 50/60 Hz
• Terminal type: screw terminals
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational current: 6 A at AC-15 230 V; 3 A at AC-15 400 V; 3 A at DC-13 24 V; 1 A at DC-13 220 V
• Mounting: DIN rail 35 mm or screw mounting
• Electrical endurance: 10 million switching cycles (AC-15)
• Mechanical endurance: 30 million switching cycles
• Operating temperature: -25 to +55 °C
• Degree of protection: IP20
• Standards: IEC 60947, EN 60947

Why choose it

This contactor is part of the proven SIRIUS 3TG10 series, known for high reliability and long service life. Its compact size saves space in control cabinets, while the screw terminals ensure secure, maintenance-free connections. The wide operating temperature range makes it suitable for demanding environments.

Ideal use cases

• Switching auxiliary circuits in motor control centers
• Expanding contact availability in PLC systems
• Controlling indicator lamps and signaling devices
• Interposing relay for higher power contactors

Good to know

The 3TG1010-0AL2 is an auxiliary contactor, not a power contactor; it is designed for control circuits, not for directly switching motors. For DIN rail mounting, a standard 35 mm rail is required. The IP20 protection means it must be installed in an enclosure to prevent accidental contact with live parts.