• 85 Meadowland Drive, South Burlington, VT 05403

The Leading Independent Provider of Power Conversion Solutions Since 1963

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Spare Parts


Spare parts are more than a form of insurance. Having the appropriate factory approved rectifier spare parts on hand and ready for use will assure maximum up-time. Our power supplies are designed for years of trouble-free use, especially when the installation and routine maintenance guidelines contained in the service manual are followed. In the unlikely event of failure, please contact our spare parts specialist to obtain a full complement of spare parts to allow your rectifier to be repaired promptly and avoid unnecessary downtime.

Dynapower is proud to supply thousands of spare parts, including Dynapower control boards, Rapid Power control boards, amp and volt meters, fuses, thermal switches, diodes, thyristors and potentiometers. Our spare parts department is always available answer any questions.

For immediate assistance, please contact Mary Duncan through our Spare Parts Hotline at (802) 860-7200 – or email parts@dynapower.com


Stable and accurate electronic control boards regulate power supply current and voltage output. Automatic cross over circuits allow the supply to accommodate dynamic load changes. The electronic boards are easy to install and calibrate.

Our thermal switch modules meet specific custom requirements including severe or unusual environments, high or low current applications, unusual temperature ranges and/or non-standard differentials and set point tolerances.

Fast acting fuses from 1 to 600 Amperes, 600 volts or less, that provide safe protection of control circuits and equipment. Time delay fuses from 1 to 30 Amperes, 250 volts or less, for protecting small motors, instruments and electronic circuitry. Time delay fuses from 1 to 20 Amperes, 500 volts or less, primarily used for protection of control transformers. Dual element fuses from 1 to 6000 Amperes, 6000 volts or less, for protection against heavy short circuits. These fuses have an interrupting capacity of up to 200,000 Amperes for protection of motors and branch circuits. Low voltage limiter fuses from 35 to 500 Amperes, 32 volts or less. These are window type fuses for isolating faults in low voltage power circuits.

SCRs allow precise control of the output. Like diodes, SCRs come in both hockey puck and stud mount styles. Voltage and current rating must be specified when ordering.

Don’t see the part you are looking for listed here? Call our Spare Parts Hotline at (802) 860-7200 – or email parts@dynapower.com to find out if we carry the part you are looking for.

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