P S Technology Logo

Welcome to P S Technology, Inc.

Paul E. Schoen, President


General Information:

P S Technology, Inc. is a small business dedicated to providing a wide range of products and services at reasonable cost. We specialize in equipment for electrical testing, particularly high current generation and measurement for primary injection testing of circuit breakers, reclosers, and other protective devices. Our low overhead, unique engineering experience, and creativity combine to provide an affordable source of standard and custom-built equipment, as well as repair and calibration services.

A short article, "Taming the Big Bang", provides a light-hearted introduction to circuit breaker testing and tells how the Z-World SmartCore helped with the design of the BTSMASTER.

An older article, Circuit Breaker Testing Technology, originally appeared in Electrical Manufacturing magazine, in 1989.


Visit our FTP sites for manuals and drawings for electrical test sets (Under construction).

Download the latest Windows version of the Ortmaster program

Many products and services now offered through Electrical Test Instruments, Inc.

Now being developed: Simple Hybrid Auxiliary Motor Package (SHAMPAC) for Vehicle Fuel Economy

Products and Services:


Surplus Parts

Electrical Test Equipment

Repair and Calibration



The MAC-20 (Was the BTSMASTER)

The PI-800/1600/4000 (Was the CBTMASTER)


Relay Test Sets

Low Resistance Ohmmeters

High Voltage Insulation Test Sets

Accessories for High Current Test Sets


How to reach us:

EMail to: paul at pstech-inc dot com

Note: Email address must be constructed from information above, due to spammers.

or Phone:

Paul E. Schoen, President
(410) 667-4889 (Answering Mach)


or Mail to:

P S Technology, Inc.
715 Warren Road
Cockeysville, MD 21030-2824

P S Technology, Inc. is a Maryland corporation founded in 1989