Siemens 3RT2036-1AP04 Power Contactor 3P 51A 22kW 400V 230VAC Coil

The Siemens 3RT2036-1AP04 is a 3-pole SIRIUS power contactor rated at 51 A / 22 kW at 400 V under AC-3/AC-3e duty, with a 230 V AC 50 Hz control coil. Size S2, it is supplied with 2 NO + 2 NC auxiliary contacts and a removable auxiliary switch block for on-site configuration flexibility.

Technical specifications:

• MLFB: 3RT2036-1AP04
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor (3RT2)
• Size: S2
• Number of poles (main circuit): 3
• Rated current at AC-3/AC-3e, 400 V: 51 A
• Rated current at AC-1, 400 V, 40°C: 70 A
• Rated power at AC-3, 400 V: 22 kW
• Maximum operating voltage: 690 V AC
• Control supply voltage: 230 V AC, 50 Hz
• Auxiliary contacts: 2 NO + 2 NC
• Terminal type: Screw terminal
• Insulation voltage (main and auxiliary circuits): 690 V
• Surge voltage resistance: 6 kV
• Mechanical service life: 10,000,000 operating cycles
• Operating temperature: -25 ... +60°C
• Storage temperature: -55 ... +80°C
• Installation altitude: maximum 2,000 m
• Net weight: 1.052 kg

Features and benefits:

• Removable auxiliary switch block enables configuration changes without replacing the contactor body
• Mechanical service life of 10,000,000 operating cycles reduces maintenance intervals
• Low holding power of 16 VA at 50 Hz minimises continuous energy draw in the control circuit
• Wide ambient temperature range of -25 ... +60°C supports installation in demanding industrial environments
• 6 kV surge voltage resistance on both main and auxiliary circuits provides protection against voltage transients

Applications:

• Switching and starting of three-phase motors up to 22 kW at 400 V in industrial plant
• Control of pumps, fans, and compressors requiring frequent switching (up to 800 operations/h at AC-3)
• Resistive and inductive load switching in building services and HVAC installations
• Machine control panels where a removable auxiliary switch block is required for circuit flexibility

Compliant with EN 60947-1. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2036-1AP04, SIRIUS 3RT2 S2 power contactor 51A 230V coil.