MasTec Products

MasTec designs and manufactures a wide range of products:

 

Other products available on special order


 Product  Descriptor
 VO2 Tester  A Completer Metabolic Analyser system running on a Desktop or Laptop with USB DAQ. Includes O2 and CO2 analysers, ventilaton turbine and mixig chamber, plus heart rate meter.
 AC Power Analyser  Completer System, 20th harmonic THD, voltage and current, Power factor, use Fluke Power Meter or probes into Laptop with USB DAQ
 Pressure Transducer  
4-20mA, 2 wire, pressure transducers, ranges +/-1, 5, 15, 150psi, gauge, absolute and differential. calibrated and temperature compensated, encapsulated or PCB or boxed
 Temperature Transducer 4-20mA, 2 wire, Stainless Well -- LM35 ( 0 to150 C ) or LM 34 ( 5 to 300 F ) ( -15 to 150 C) versions
 pH Transducer  4-20mA, 2 wire, glass probe, calibrated, temperature compensated, replaceable probes
 Chlorine Transducer  4-20mA, 2 wire, suitable for tanks, pools and hot tubs. replaceable heads
   

DC Solid State Relay 100amps

Solid State Relay 3-32VDC Input 100A@30VDC Switching

Switching high current DC loads normally requires use of a contactor to avoid arcing as the contacts try to separate. DC pulls a long flame unlike AC which breaks every cycle.

These solid state relays use MOSFET technology to provide an economical and reliable method of switching medium to high power DC loads.

By electrical switching with a semiconductor, there is no arcing as contacts break at high current and the low on-state resistance provides a viable alternative to the bulky and expensive contactors we used to use.

These units are also isolate the control side from the switch side with a 2500VRMS LED light pathway.

You can parallel these units also for higher current switching. If you do, overdrive the input, to get the fastest switch time.

Output Circuit
Load Voltage: 0-30VDC
Load Current: 0.02-100A
Max On-State Resistance: 0.007Ohms
Max On-State Voltage Drop: 0.35V
Max Turn On Time: 0.5ms
Max Turn Off Time: 0.5ms
Max Surge Current: 240A (10ms) - very handy for turn current spikes

We suggest mounting on a heat sink or steel cabinet back wall for dissipating heat up to 35 watts at full load. We can supply tunnels or open fin heat sinks.

 

You also may need a fan if the load stays that high for some time.

Use a thermal switch on the heatsink to control the fan.

Input Circuit
Control Voltage: 3-32VDC
Control Current: 28mA max.
Min Turn Off Voltage: 1.0VDC
Input Resistance: 1.2kOhm
Drive with pull down or sinking TTL or CMOS easily

©MasTec Ltd