Standard SSR Accessories

Quick Install

Designed for faster installation to reduce your labor time.

Standard SSR Accessories

Specially designed accessories are available for both power PAC SCR's and the SSR Series products.

LM-2 Solid State Relay Driver for SSR Series

The LM-2 (0135-28144) module accepts a 4 - 20 mA control signal and converts it to a 4.5 - 32 VDC time proportional control signal. Power supply is not required. The LM-2 is powered by the 4 - 20 mA loop. The LM-2 Module supports single and three-phase 2-leg power control configurations.

The LM-2 module mounts directly to the input terminals labeled A2(-) and A1(+) of the solid state relay. Screw terminals are provided on the LM-2 module for the 4 - 20 mA control signal. The solid state relay's load is connected to terminals L1 and T1.

Once the connections are made the LM-2 module and solid state relays provide a time proportional zero-fired control signal to the load.

Vari-Watt Multiple SSR/SCR Power Control Driver

The NEW Vari-Watt Power controller accepts a control signal input and produces output signals that can drive up to 4 Zero-Crossover Solid State Relays or a Contactor. The signal to the solid state relays implements Chromalox DOT firing which allows for switching as ac-curate as every 3 cycles (50msec). In addition, the 4 outputs evenly distribute power using the Vari-Watt’s Load Management Feature.

Select from 3 analog control inputs of 4-20ma, 0-5 VDC or 0-10 VDC to drive up to 4 SSRs. The SSR’s will fire in succession and evenly distribute the power draw via the Vari-Watt’s Load Management Feature.

The Vari-Watt can accept a digital input of a 4-12 VDC 1 sec time proportion signal from a controller, and convert it to a 15sec cycle time 240 VAC output for a contactor or a distributed output with Load Management to up to 4 SSR’s. Auto/Manual Control – A jumper or contact closure allows the user to select between Manual Control using the 1K Pot or Auto Control using either the 4-20ma, 0-5 VDC or 0-10 VDC control inputs.

Request a Quote

Every heating challenge is unique. Chromalox offers the industry’s most comprehensive offering of component heaters and controls. Our experienced engineers will work with you to provide a complete thermal solution for your unique application.