Overvoltage protection of intrinsically safe circuits in hazarduos areas

Feb 2000 IS & Ex

The Blitzductor CT Type MD/Ex is an intrinsically safe, two-piece, surge protection device for use in 24 V circuits in hazardous areas. Locally manufactured by Surge Technology, it is designed to protect information technology systems and equipment.

When used with the attachable modules, it is a combined lightning/ overvoltage surge protection device. Only 12 x 58 mm in size, the Blitzductor fits easily into panel boards and simply snaps onto a DIN rail.

The Blitzductor CT family features a base which acts as a terminal block. Due to the make-before break contacts in the base, the signal is not interrupted when the modules are moved or exchanged. In the case of an overload, signal lines are short-circuited or short-circuited to ground, generating a failsafe state. Data transmission is interrupted and the overload is indicated immediately.

Each Blitzductor CT is marked with co-ordination characteristics that indicates the energy capability and the let-through energy of the different modules. The user is also informed how to install the modules in the correct order.

Surge Technology

(011) 792 1303

[email protected]

www.surgetek.co.za

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