Astronics / EADS / Racal 1260-20 / 1260-20B Power Switch Module

The Astronics/EADS/Racal 1260-20 and 1260-20B Power Switch Module is a C-size VXI switch card that distributes and controls AC line power, DC power supplies, and current sources through 20 independent Double-Pole Single-Throw (DPST) relays. Each channel operates independently or configures into custom switching networks, supporting maximum switching currents of 8 A at 250 VACrms or 5 A at 48 VDC. The module integrates relay coil current monitoring for confidence checking and includes mounting holes on each channel for series and shunt elements such as arc suppressors or filters. ## Technical Specifications • Switch Configuration: 20 independent DPST relays, each channel independently configurable • Maximum Switching Current: 8 A at 250 VACrms; 5 A at 48 VDC (carry current up to 10 A) • Maximum Switching Voltage: 250 VACrms or 48 VDC • Relay Coil Current Monitoring: Integrated for operational assurance • Series/Shunt Element Support: Mounting provisions on each channel • Form Factor: C-Size VXI module • Connectors: Supplied with one set of mating connectors and solder pins; additional connectors and crimp-type pins available separately ## Key Features • Relay coil current monitoring for confidence checking and assurance of proper relay operation • Independent channel operation enabling flexible network configurations • Integrated provisions for arc suppressors, filters, and other protective elements • Supplied with complete connector and pin package ## Control & Integration • Requires Option 01 or Option 01T Smart Card Module for operation • Option 01 operates with native command set • Option 01T supports SCPI command set with message-based and register-based operation, including include, exclude, scan, and relay monitoring functions • VXIplug&play driver support for Microsoft Win32 API • Compatible with LabWindows/CVI and LabVIEW development environments ## Typical Applications Automated test systems, power distribution switching, multi-source signal routing, and AC/DC load switching in VXI-based instrumentation platforms.