Siemens SIRIUS 3RT14 Power Contactor 3RT1456-6AP36, 3-Pole, 400 A, 230 V AC Coil

Industrial switching of high-current loads demands a contactor that combines robust performance with reliable control. The Siemens SIRIUS 3RT1456-6AP36 power contactor is engineered for exactly that: switching three-phase motors and other loads up to 400 A under AC-1 conditions, with a 230 V AC coil for direct integration into standard control circuits.

Who is it for

This contactor is intended for panel builders, maintenance engineers, and machine OEMs who need a compact, screw-mounted power switching solution for motor control, heating, lighting, and power distribution in industrial environments.

Main features

• 3-pole main contacts rated for 400 A (AC-1, 40°C) and 690 V AC operational voltage
• Control coil: 230 V AC, 50/60 Hz
• Auxiliary contacts: 2 NO + 2 NC for control and signaling
• Contactor size S10 with screw terminals for main and auxiliary circuits
• Mechanical endurance of 10 million switching cycles and electrical endurance of 1 million cycles (AC-1)
• Operating temperature range: -25°C to +60°C
• Rated insulation voltage: 1000 V

Specifications

• Brand: Siemens
• Model: 3RT1456-6AP36
• MPN: 3RT14566AP36
• EAN: 4011209509726
• Series: SIRIUS 3RT14
• Product type: Power contactor
• Number of poles: 3
• Rated operational current (AC-1, 40°C): 400 A
• Rated operational voltage: 690 V AC
• Control supply voltage: 230 V AC, 50/60 Hz
• Auxiliary contacts: 2 NO + 2 NC
• Contactor size: S10
• Mounting type: Screw mounting
• Connection type (main circuit): Screw terminal
• Connection type (auxiliary/control circuit): Screw terminal
• Mechanical durability: 10,000,000 cycles
• Electrical durability (AC-1): 1,000,000 cycles
• Rated insulation voltage: 1000 V
• Short-circuit protection (gG fuse): 400 A

Tips

Ensure the control circuit can supply the coil inrush current; use appropriate short-circuit protection (e.g., 400 A gG fuse) and verify terminal torque during installation. The contactor is designed for screw mounting in a clean, dry enclosure.