Listing

Image	Name
	Wattcor Power Solid State Relay W212 (4-20mA/0-10Vdc input)
	Wattcor Power Solid State Relay W211 (logic inp)

More Information

"zero crossing" switching The Wattcor W211 / 212 line offers highly reliable solid state power control with “zero crossing” switching up to 600A / 660Vac for resistive loads. The units are ideally suited for repetitive, wear and tear free switching of heater banks. The most outstanding features of these switches are low heat dissipation and compact, space saving construction.

The W212 is controlled by an analogue signal (0-5V, 0-10V, 0 / 4-20mA) or potentiometer. The output switches in bursts (“zero crossing” switching) and the duty cycle is proportional to the input signal. The cycle time of the output can be adjusted by a trimmer incorporated in the unit. Three phase loads can be controlled by using one W212 as master and one or more W211 as slaves. The master unit synchronizes the slave units.

Common Features:

• Compact construction, space saving
• Low power dissipation (1.2W / A)
• Zero crossing switching
• Logic "Power disabled" input
• "RPC" (optional) partial load failure detection
• "DTC" (optional) short circuit or current failure detection
• "DE" (optional) electronic overload protection up to 13x nominal current
• Alarm relay output for fault conditions
• Internal fuse with fuse failure output (on 250A and 600A units)
• DIN rail mounting (25A to 150A units)
• Panel mounting (250A to 600A units)

General Features:

Nominal working voltage: 660Vac (max. range 20...725Vac)

Nominal frequency: 50/60Hz 

Temperature derating curves

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