Solenoid-Controlled Interlock delivers UPS system safety.

Press Release Summary:

Featuring multi-voltage input with range of 24-220 Vac/Vdc, KSUPS+ only permits access to UPS system once it has been put into safe condition. Inserting and turning key operates 4-pole switch contacts and allows system to run. Key remains trapped and can only be released when signal is received by device and solenoid is energized. Removing key switches contacts to Off state, and key can then be used to open access interlock.

Original Press Release:

Castell's Multi-Voltage Solenoid-Controlled Interlock for UPS System Safety

KSUPS+ improves delivery times and safety rating

Chicago, Illinois - Industrial safety specialist 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.

Castell has also reviewed 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.

To learn more about the Castell's products, visit, call 312-360-1516, or email

About Castell:

Since the inception of the industrial safety industry, Castell ( has been the leader in trapped key interlocking technology, developing products that keep pace with the needs of emerging markets and applications in all business sectors. Its products go beyond meeting legislation to create the safest working environments possible. A Halma company, Castell has its US offices in Chicago, Illinois.

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