Solid-State Relays

Catalogs > Industrial Controls Catalog > Relays, Timers, and Temperature Controllers > Solid-State Relays > Bulletin 700-SF Square Base Relay

Bulletin 700-SF Square Base Relay

Approximate Dimensions

All units are in millimeters unless otherwise indicated. To convert to inches multiply by 0.0394. Dimensions are not intended for manufacturing purposes.

Note:Bul. 700-SF is compatible with Cat. No. 700-HN116 socket.

Basic Application Considerations of Bulletin 700-SF

High Density Mounting of Multiple SSRs

If multiple SSRs are mounted side by side be aware that the outer case wall of the SSR acts as a radiator. The SSR case serves to dissipate heat. Install the relays so that they are adequately ventilated. If poor ventilation is unavoidable, reduce the load current by half.

Connection

For DC load switching, the Bul. 700-SF SSR will operate properly if the load is connected to either the positive or negative load terminals.

Protective Component To Extend SSR Life

When controlling AC inductive loads, connect an inrush/surge absorbing device (varistor) across the SSR load terminals. If the SSR has built-in surge suppression (Bulletins 700-SE and 700-SH) and additional surge suppression is required, connect the varistor across the terminals of the load device. Select a varistor that meets the conditions of the load voltage outlined in the table below.

Load Voltage	Varistor Voltage [V]	Varistor Surge Resistance
100…120V AC	240…270	1000 A min.
200…240V AC	440…470
380…480V AC	820…1000

Note:For additional details applying solid-state relays, refer to pub. number 700-AT001_-EN-E, Solid-State Relay Application Guide.

For a DC inductive load, a diode should be connected parallel to the load to absorb the counter electromotive force (OFF) of the load.

Note:For additional details when using Solid-State Relays, refer to pub. 700-AT001_-EN-E, “Solid-State Relay Application Guide".