Multivoltage interlock

May 30, 2012
Multivoltage interlock
Castell has launched a new multi-voltage interlock primarily for use with uninterruptible power supply (UPS) systems. The KSUPS+ is a solenoid-controlled trapped key interlock that only permits access to a UPS system once the system has been put into a safe condition. The KSUPS+ features a number of design improvements, including multi-voltage input. Having a wide voltage input range means that a single device now replaces eight previous devices; the input voltage for the KSUPS+ ranges from 24 V AC or DC to 220 V AC or DC. As a safety device, the integrity of the KSUPS+ is vital. A monitored solenoid increases the safety performance rating of the KSUPS+, ensuring a higher level of protection for personnel while working on UPS systems, the company said. Castell has also reviewed and improved the operational efficiency of the KSUPS+, with clear indication of where the safety component is located on a switchgear panel. The KSUPS+ retains the same mounting dimensions as the previous unit for easy retrofitting. Inserting and turning the key operates four pole switch contacts and allows the system to run. The key remains trapped and can only be released when a signal is received by the device and the solenoid is energized. Removing the key switches the contacts to the ‘off’ state, and the key can then be used to open the access interlock.
www.castell.com

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