#ISAutowk Weidmuller’s surge protection family

Weidmuller are displaying a new DIN-rail mountable surge protection family, the SPD Series, with local and remote self-monitoring. The range 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 A.C. 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. Weidmuller’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).

Weidmuller’s 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°F to 185°F, make the SPD family particularly suitable for process control applications.

In addition to UL approval, Weidmuller’s new SPD Series, is CSA approved to CSA Electrical Notice No. 516, Surge/Transient Voltage Suppressors.

Weidmuller is the leading provider of solutions for the transmission of power, data and control signals in industrial environments. The company develops, produces and sells industrial electronics, network infrastructure components and connectivity solutions such as Wireless Solutions, Industrial Ethernet, Relays, Power Supplies, I/O modules, printed circuit board connectors, terminal blocks and complete DIN Rail assemblies. The Weidmuller group has a strong international focus with manufacturing or sales locations in over 70 countries.


About Eoin Ó Riain

Sé Read-out iris uaithoibríoch, ionstraim agus stiúradh na hÉireann agus an "Signpost" a áit ar an idirlín! Read-out is Ireland's journal of automation, instrumentation and control and the Instrumentation Signpost is it's web presence.
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