New, solid state motor starter.
The "H" (hockey puck size, solid state relay) family provides a precise zero-crossing motor starter. By starting and stopping the control of a motor at the zero-crossing mark, electronic noise is greatly reduced. This may be beneficial if there are nearby PLCs, computers, micro-processor based equipment, or other devices that may be impacted by electronic noise spikes. All motor applications require that the solid state relay be chosen based upon the maximum inrush surge of the motor. This is frequently about 6-8 times the amperage that is required once the motor is running. Your motor supplier can tell you this number. By its design, a Power-IO solid state relay is an ideal way to control a motor due to the ability to absorb short term amperage surges, in addition to its trademarked Maximum Surge Survival design for voltage surge protection. The clear finger-safe cover permits an additional motor starter MOV to be placed directly across the solid state relay's output, for a fourth layer of voltage surge protection. The size and shape of the plastic safety cover means that the MOV can be easily inserted without any additional heat shrink tubing or other time consuming requirements.
The Power-IO solid state relay is available as either 100-280 VAC activated or 4-32 VDC activated. A green LED indicates the status of the control input signal. Due to the low, current limited, control input requirements; three of the Power-IO units can be easily used for a three phase motor application. For example: when used with PLCs or computerized control systems, less than 5 mA is required when the DC logic control signal is wired in series to three HDA-6V75 solid state relays (three units, wired in series: the control signal requirement is 12 vdc at 3.5 mA min total).
The Power-IO solid state relays and heat sinks can be purchased individually or they can be purchased pre-assembled as shown in the picture. For three phase applications, three single phase units can be used OR three Power-IO relays can be installed on our new, triple zone, HEATSK-3PK. The HEATSK-3 PK provides for three phase control in a tiny 7 inch by 2.4 inch footprint. For more information on the "H" family of solid state relays, including the Maximum Surge Survival features, the robust 1200 Vpk transient over voltage peak protection, or superior dv/dt performance, please visit H Family general specifications or H Family detailed specifications in .pdf format.
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Other sizes and configurations can be manufactured as required.