Pre-charge contactor

safetypowerelectro-pneumatic

Overview
The DC contactors are engineered for switching DC traction circuits under load in rail and trolley applications. Their modular design allows configuration of unified product ranges with variable parameters. Actuation is available via pneumatic drive with electromagnetic valve or by direct electromagnetic operation. Air-contact construction with electromagnetic arc blow-out and optional varistor or diode protection limits peak voltages. Compliant with EN 60077-1, EN 60077-2 and EN 61373.

Benefits

• Suitable for EMU, diesel locomotives and trolleybuses
• Flexible installation: machine-room or container mounting
• Mountable vertically or horizontally
• Available in single-pole and two-pole configurations
• Optional auxiliary switches for on/off status signalling
• Proven, serviceable modular design for straightforward maintenance
• Contactor variants:
  • Charging contactors: for controlled charging of inter-circuit capacitors
  • Line contactors: for connecting main circuits after capacitor charge
  • Heating contactors: for switching vehicle heating circuits
  • Safe galvanic disconnection: specific option for trolleybus systems

Main parameters
Control voltage: 24 V DC / 72 V DC / 110 V DC
Operating temperature range: -30°C to +60°C
Number of poles: 1 or 2 poles
Control types: electro-magnetic or pneumatic
Contactors for 750–1,000 V DC: rated currents 40 A; 400 A; 2×400 A; 750 A; 800 A; 2×800 A
Contactors for 1,500 V DC: rated current 400 A
Contactors for 3,000 V DC: rated current 40 A

Technical specifications

• Intended use: switching DC traction circuits under load
• Modular design for configurable ranges and spare-parts commonality
• Actuation options: pneumatic drive with electromagnetic valve or electromagnet
• Arc extinguishing: air contactors with electromagnetic blow-out
• Peak voltage mitigation: varistor or diode fitted as required
• Standards: EN 60077-1, EN 60077-2, EN 61373
• Control voltage options: 24 V, 72 V, 110 V DC
• Operating temperature: -30°C to +60°C
• Pole configurations: 1 or 2 poles
• Rated currents and voltage classes: see Main parameters above
• Installation: suitable for machine-room or container; vertical or horizontal mounting

Applications & ordering

• Primary applications: EMUs, locomotives, trolleybuses and other DC traction systems
• Select contactor type (charging / line / heating / galvanic disconnection) according to circuit function
• Specify control voltage, pole configuration and rated current when ordering
• Contact manufacturer or authorised distributor for integration, drawings and customization options