Overview
The Siemens 3RT2025-1AP00 is a compact IEC-rated power contactor from the SIRIUS product family, designed for dependable motor and load control in industrial automation. This 3-pole contactor operates at 230V AC, 50 Hz and delivers 17A rated current at 400V under AC-3 duty cycle (motor starting). The unit features 1 NO + 1 NC auxiliary contacts and uses screw-type terminals for secure wiring. Size S0 footprint makes it space-efficient for control panels.
Key Features
- 3-Pole Configuration: Controls three-phase motor loads with three normally open main contacts.
- Auxiliary Contacts: 1 NO + 1 NC auxiliary contacts for interlocking and feedback signaling.
- Compact S0 Size: Optimized footprint for panel space and fast installation in control cabinets.
- Screw Terminals: Secure wire connection without spring clips or cage connectors.
- IEC Compliance: Built to IEC 60947-4-1 standards for international compatibility.
- Low Power Loss: 1.8 W total at rated current in hot operating state, reducing heat in the panel.
Technical Specifications
- Coil Voltage: 230V AC, 50 Hz
- Rated Current (AC-3): 17 A at 400V; 17 A at 500V; 13 A at 690V
- Rated Current (AC-1): 40 A at 400V; 40 A up to 690V @ 40°C; 35 A @ 60°C
- Main Contacts: 3 NO (normally open), 0 NC
- Auxiliary Contacts: 1 NO + 1 NC
- Maximum Operating Voltage: 690V (insulation rated)
- Power Loss (Hot State): 1.8 W total; 0.6 W per pole
- Terminal Type: Screw terminals
- Size Category: S0
- IP Rating: IP20
- Motor Ratings: 5 HP @ 230V; 10 HP @ 460/480V
Typical Applications
The 3RT2025-1AP00 is widely used for:
- Three-phase motor starting and stopping in pump, compressor, and fan applications.
- Machine tool control and production line automation.
- HVAC system motor contactors.
- Industrial OEM control panels and retrofit installations.
- Reversing and non-reversing motor circuits with pilot control.
Compatibility & Replacements
Compatible With
- Siemens SIRIUS control systems and modular contactor block designs.
- Standard 3-phase motors rated 5 HP @ 230V and 10 HP @ 460/480V.
- IEC-compliant control transformers and pilot devices.
- Snap-on auxiliary switch modules (3RT28, 3RT29 series) for expanded contact options.
- SIRIUS function modules with IO-Link and AS-Interface communication.
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 3RT2025-1AP00 is the direct successor to earlier SIRIUS S00/S0 contactors and may replace 3TF and older contactor families in retrofit applications, subject to wiring and auxiliary contact verification.
Works With
- IEC 60947-4-1 compliant control circuits and automation systems.
- Siemens S7-1200, S7-1500, and legacy S7-300/400 PLC systems for pilot control.
- Standard relay logic and hardwired control panels.
- SIRIUS modular system ecosystem (auxiliary blocks, transient suppression modules).
- International low-voltage distribution equipment and motor control centers.
