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VOLUME -26 NUMBER 10
Publication Date: 10/1/2011
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October 2011 Issue
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New Surge Protection Family from Weidmuller
Range of new surge protectors.
Richmond, VA — Weidmuller has introduced a new DIN-rail mountable surge protection family, the SPD Series, with local and remote self-monitoring. The product line includes seven SPD models, with accessories, for low voltage distribution and protection of industrial control systems, equipment, assemblies and devices.
The power range, SPD II, is UL 1449 Edition 3 approved to protect AC single- and multi-phase distribution circuits with nominal voltages up to 480V, and safely discharge impulse surges up to 40kA (8/20µs) to ground. The SPD II's compact modular construction uses only 18mm of rail width per phase, and allows quick and easy arrestor replacement. The company's SPD III model, for single-phase devices, provides low cost, common-mode protection (between Line, Neutral and Ground), with maximum discharge capacity of 20kA (8/20µs).
The SPD design is based on high-energy varistors (MOVs) equipped with thermal disconnects and integral failure indicators. A remote signaling contact for disconnection indication is standard on each unit. For ease of replacement, varistors are housed in pluggable modules with connections that are mechanically keyed to the base to prevent incorrect arrestor module replacement. Wide ambient operating temperature ranges, from -50 to +185°F (-45.5 to +85°C), make the SPD family particularly suitable for process control applications.
In addition to UL approval, the new SPD Series is CSA approved to CSA Electrical Notice No. 516, Surge/Transient Voltage Suppressors.
Contact: Weidmuller, 821 Southlake Blvd., Richmond, VA 23236
800-849-9343 or 804-794-2877 fax: 804-973-2593 Web:
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