Siemens 3RT2025-1AP04 SIRIUS Power Contactor 17A 7.5kW 230V AC 3P

The Siemens 3RT2025-1AP04 (MLFB: 3RT2025-1AP04) is a SIRIUS 3RT2 series 3-pole power contactor rated at 17 A / 7.5 kW at 400 V in AC-3/AC-3e duty, with a 230 V AC 50 Hz control coil. It features a built-in auxiliary contact arrangement of 2 NO + 2 NC and connects via screw terminals in size S0 frame.

Technical specifications:

• MLFB: 3RT2025-1AP04
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor (3RT2)
• Contactor size: S0
• Number of main poles: 3
• Rated operational current (AC-3, 400 V): 17 A
• Rated operational current (AC-1, 400 V, 40 °C): 40 A
• Rated power (AC-3, 400 V): 7.5 kW
• Rated power (AC-3, 230 V): 4 kW
• Max operating voltage (main circuit): 690 V
• Control supply voltage: 230 V AC, 50 Hz
• Auxiliary contacts: 2 NO + 2 NC
• Terminal type: Screw terminal
• Insulation voltage (main and auxiliary circuit): 690 V (pollution degree 3)
• Surge voltage resistance: 6 kV
• Operating temperature: -25 ... +60 °C
• Storage temperature: -55 ... +80 °C
• Max installation altitude: 2,000 m
• Mechanical service life: 10,000,000 operating cycles
• No-load switching frequency: 5,000 operations/h
• Net weight: 449 g

Features and benefits:

• Removable auxiliary switch allows flexible field configuration without replacing the contactor
• 2 NO + 2 NC auxiliary contacts integrated, suitable for control and signalling circuits
• High mechanical service life of 10,000,000 cycles reduces maintenance requirements
• Operating voltage range of 0.8 to 1.1 x rated coil voltage ensures reliable pick-up across supply fluctuations
• Low power loss of 1.8 W per contactor in hot operating state at rated current
• Compatible with size S0 accessories and function modules within the SIRIUS 3RT2 range

Applications:

• Switching and controlling three-phase motors up to 7.5 kW at 400 V in AC-3 duty
• Industrial motor starters and direct-on-line starter assemblies in control panels
• Resistive load switching in AC-1 applications up to 40 A at 400 V
• Lighting and capacitor bank switching in AC-5a and AC-6a applications
• Automation and machine control circuits requiring integrated auxiliary signalling contacts

Compliant with EN/IEC 60947-4-1 for low-voltage switchgear and controlgear. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2025-1AP04, SIRIUS 3RT2 17A contactor, Siemens S0 power contactor 230V coil.