SCR Power Controls 

SCR Power Controls

At Quartz Tubing, we proudly offer SCR power controls to help regulate the heat your quartz heaters are producing. 

Reliable - Oversized, isolated SCR's with MOV, DV/DT protection and I2T Rectifier fuses standard. No phase restrictions. No transformers to wire up. No field calibration needed.

Versatile - Phase Angle Control for IR Quartz heaters. Voltage and current limit gives smooth Proportional control. Zero voltage switched, with fast, wide-ratio, auto-variable time based proportioning and no 3rd line hookup required. On/Off controls replace mechanical and mercury contactors. Our SCR power controls can cycle 1,000,000,000 times or more. No HazMat problems, no arcs or mechanical wear.

Compact - Space saving integrated thermal-mechanical designs.

Custom and Multi-zone configurations available.

Affordable - Large family of controls lets you choose what is right for your needs.

Delivery - Stocked for overnight delivery.

Product Specifications and Codes

Find your ordering code by choosing the appropriate product specifications from our list of available models.

Ordering Codes & Specifications

SCR Power Controls Models and Specifications

* Fan cooled with overtemperature thermostat.

Ambient Temperature: 50o C for listed ratings.

Load: Resistive - not for motors or transformers. 3 Phase - 3 wire wired wye or delta.

Milliamp Output Modules

Manual Potentiometers, Solid State Relay Drivers and Input Interface modules (Dials) for use with your SCR Power Controller. Click here for available models and specifications.

MAI mA Input Interface Module

Accepts a 0-20 mA input signal at 1.5 volts and produces a 0-20 mA at 20 volt signal to drive multiple loads/controllers. MAI can also accept a potentiometer input (135 Ohm thermostat or any 1K pot) and produce 4-20 mA @ 20 V to drive all SCR power controls, valve positioners, etc. The MAI can be modified to accept DC voltage inputs and convert them to a 4-20 mA control signal to drive SCR and TRIAC controls. (D.C. voltage input ranges must be ordered as options, contact us for availability). Operates on 120 VAC, 208-277 VAC, or 480 VAC.

MAP Series Manual Potentiometer 0-20 mA Output Source

Same as MAI but has potentiometer with 2 ft. of wire, 0-100 dial and knob ready for panel mounting. Works to control all "A" series controllers for open loop control. Operates on 120 VAC, 208-277 VAC, or 480 VAC. Will also work with 4-20 mA signal as an amplifier/trim adjustment.

MTP Series Manual Potentiometer Solid State Relay Driver

MTP produces a fast time proportioning 20 VDC signal for driving Solid State Relays (SSRs). MTP has a power output limit adjustment of 63 - 100%. The MTP accepts the same inputs as the MAI (potentiometer, mA, D.C. Voltage, or 135 Ohm thermostat). The MTP is supplied with potentiometer with 2 ft. of wire, 0-100 dial and knob. Can run over 10 SSRs.

For 4-20 mA Input SSR Driver use MITP. MITP mounts onto SSR.