Product Details


Intervolt 12VDC Programmable Voltage Sensing Relay


Regular price $399.00
Unit price  per 
GST included. Shipping calculated at checkout.
Regular price $399.00
Unit price  per 

The PSR is a user adjustable voltage sensing relay. Electrically isolated, non-polarised and bi-directional, features previously unheard of in any other solid state relay devices.

Voltage sensing relays have existed in one form or another for many years. They are commonly used to automatically replace the traditional manual process of controlling the charge function between batteries or battery banks, thus eliminating the risk of over/under charging.

interVOLT takes this process to a whole new level. The innovative design of the interVOLT PSR replaces traditional electro-mechanical relay devices used in 12/24 Volt DC applications by removing all mechanical parts to produce a completely solid state product with a myriad of added features.

In short, the PSR is a user adjustable voltage sensing relay in terms of voltage and time delay parameters. It allows the user to choose the voltage they want for switching loads on and off rather than be restricted to settings dictated by manufacturers. The time delay allows the relay to activate only after a user specified time to prevent cyclic (threshold) switching. In addition the PSR is electrically isolated (contact to load), non-polarised and bi-directional, features previously unheard of in any other solid state relay devices. Additionally the PSR has the major benefit of being able to change from normally open or normally closed, all literally, at the touch of a button.




Nominal Voltage 12VDC
Input Voltage 9 – 38VDC
Continuous Contact Rating 150 Amps Maximum (rated @ 40°C)
Peak Contact Rating 500 Amps for 10 seconds @ 10% duty cycle
Contact Resistance For load terminals ≈0.5mΩ @ 25°C. Does not take into account connections i.e. terminal resistance.
Contact State User selectable, normally open or closed


Load Terminals M8 threaded stud, tin plated copper, 304 stainless steel hardware
Control Terminals M3 threaded contacts, tin plated brass, 304 stainless steel hardware
Construction – Housing Black electrophorectically coated A360 (ADC 3) die cast aluminium
Construction – Cover, terminal protector and mounting feet insulators ABS/ PC injection moulded plastics and stainless steel hardware
Construction – Fasteners 304 stainless steel
Environmental IP67 rating (internal components only)
Operating Temp -25°C to + 50°C
Operating Humidity Should not exceed 95 %
Dimensions (overall) 97mmL x 86mmW x 81.5mmH
Weight (nominal) 505 Grams


Thermal Overload Shutdown Automatic reset
Low Voltage Shutdown Automatic reset @ 9.0VDC