The ASCO 920 is designed as a feeder disconnect switch for load capacities beyond the ASCO 917. ASCO 920 RC switches are available for separate mounting in NEMA type enclosures or direct mounting within lighting panelboards for total or splitbus applications.
 

It is available from 30 through 225 Amperes per pole with 2 or 3 poles and service voltages through 600 volts AC. The ASCO 920 is listed under UL 508 for ballast lighting, tungsten, general use and resistive loads. It also meets the withstand current requirements of UL 67 for panelboard applications.
 

The ASCO 920 is easy to install and features all position mounting, no derating for high inrush loads and a reliable single-solenoid operator. ASCO 920 RC switches can be used with energy management systems which automatically control lighting and power circuits
through control devices such as photoelectric cells, microprocessors, timers and occupancy sensors.

Electrical Features

• UL listed. CSA Approved
• Meets UL 67 requirements with short-circuit rating (Withstand Current Rating) of 22,000 Amps rms symmetrical at 480 volts for use with molded case circuit breakers; 100,000 Amps rms symmetrical at 600 volts for use with current -imiting
  fuses.
• Interrupts 300% of rated current at 480 volts, 0.4 to 0.5 power factor
• Can be used with metal halide, mercury vapor, quartz halogen, tungsten and fluorescent lighting.
• No derating when used on high inrush loads such as cold tungsten lamps.
• Wide arc gaps and arc splitters to quickly extinguish arcs. Isolated arcing chambers
  are widely spaced and symmetrically located.

Construction Features

• Long life. Designed for more demanding lighting contactor use. Provides extended life and quieter operation.
• Suitable for use with energy management systems.
• Rugged molded base and cover with superior electrical insulation.
• Provisions for manual operation during inspection and maintenance.
• Lightweight for easy installation.
• Plug-in auxiliary control relays available.
• Control line terminal clamps simplify installation: Insert wire and tighten. Wire range #14 AWG to #10 AWG.
• Contacts are power-driven in both directions for complete dependability.
• No extra wires or contacts needed to install signal lamps at control stations.
• Can be mounted in any position.
• Available from stock from 30-225 Amps.