Power-io products -- solid state relays, solid state contactors, motor starters and I/O modules

New "H" Family of hockey puck solid state relays for AC switching applications from 1-90 amps. These relays include a clear safety cover and the Maximum Surge Survival™ technology:

    1-90 amp, AC or DC activated solid state relays for switching AC loads
    SSR heat sinks, thermal transfer pads, MOVs, parts, pre-installed options
    I2T fuses, semiconductor fuses and din rail fuse holders

New "HMA" Family of hockey puck solid state relays for AC switching applications from 1-50 or 1-90 amps. The HMA converts the analog 4-20mA control signal into a high speed on/off/on/off control for heaters. The microprocessor-based unit uses a minimum of 3 half sine waves and adds ONs or OFFs to match the required performance. Regular resistive heaters will have an extended life; and high speed loads such as IR heaters and sealing bars will have accurate performance while using electrically clean, noise free, zero-crossing technology:

    1-90 amp, analog 4-20mA activated solid state relays for switching AC loads

"HDD" Family of hockey puck solid state relays for DC switching applications. These relays include a clear safety cover, the Maximum Surge Survival™ technology, RoHS, CE, and Made in the USA. DC switching is common for solar, vehicle, and alternative energy applications, using mosfet or IGBT technology. Switching can be any speed up to 20kHz PWM:

"C" Family of din rail contactors for applications up to 100 amps. Two pole switching or individual single poles; Maximum Surge Survival™ technology; and flow through wiring. The universal, modular design replaces mechanical, mercury or lighting contactors in industrial, municipal, or military applications.

    up to 100 amp per pole, AC activated
    up to 100 amp per pole, DC activated, + diagnostics feedback output
    up to 100 amp per pole, 0-10 VDC analog activated, + diagnostics feedback output. This analog input version provides normal high speed on/off/on/off based upon a 1 second time period, OR it provides electrically clean, zero-crossing, high speed performance based upon 3 half sine waves and adding additional ON or OFFs.

Schneider Zelio 3 phase solid state relays for AC switching applications from 1-25amps, per phase.

    Schneider 3 phase solid state contactors

The following product lines have been discontinued, primarily due to changes in RoHS lead-free requirements. Please contact Power-io for information about replacement options.

"IO" family of solid state I/O Modules: monitor AC or DC as inputs, or generate 0.1 - 3 amp outputs. Smallest size, fused outputs, 4000 volt isolation. Compatible with PLCs, PCs, TTL, and most controllers:

    Input Modules
    Output Modules

Mini "D" Family of din rail relays for applications from 1-40 amps. The Mini "D" family includes: an integral heatsink, recessed finger-safe terminals, and the Maximum Surge Survival™ technology:

    25 and 40 amp, AC or DC activated
    25 and 40 amp, analog 4-20mA activated
    Potentiometer input, pot input, manual station, manual % power controller

Three phase "D" Family of din rail relays for applications from 1-35 amps per leg. Ideal for switching 2 or 3 legs of a three phase load (delta, star, or wye loads).

    1-35 amps, two or three legs, AC or DC activated
    1-35 amps, two or three legs, analog 4-20mA activated
    Potentiometer input, pot input, manual station, manual % power controller

"D" Family of din rail relays for single-phase applications up to 100 amps. These models include: large finger-safe power terminals for 3 - 8 AWG wires; a built-in, replaceable, I²T fuse; and 2 red diagnostic LEDs for fuse open and over-temperature shutdown.

     up to 50 amp, 75 amp, or 100 amp contactor; AC or DC activated

Older "H" Family of hockey puck solid state relays for AC switching applications from 1-75 amps. These relays include a clear safety cover and the Maximum Surge Survival™ technology:

    1-75 amp, AC or DC activated solid state relays for switching AC loads

Zelio solid state relays for AC switching applications from 1-50amps.

    Zelio solid state relays