Siemens SpeedFax

The Siemens SpeedFax series is a series of panelboards and circuit breakers. This series includes both lighting and distribution panels. Some SpeedFax panels can be converted from top-feed to bottom-feed panels, or vice versa. Some support a wide range of fuses. The SpeedFax series also includes cables. The circuit breakers available in the SpeedFax series include branch circuit breakers that provide branch circuit protection. Other available circuit breakers include electronic circuit breakers with 1 pole or 2 poles. The SpeedFax series also includes spare parts, such as neutral kits, breaker mounting kits, and lug kits.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.

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Browse SpeedFax

Browse available units in our catalog of SpeedFax.

BQ3B030

This model has three poles and offers a maximum interrupting rating of 10 kAIC. It is UL and CSA certified, ensuring compliance with industry standards. It accommodates wire sizes from 14 to 8 AWG, wh

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BQ3B070

This circuit breaker boasts three poles and includes a thermal magnetic trip mechanism to handle long-time overloads and instantaneous short circuits. It features an interrupting capability of 10 kA a

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MBK175

This circuit breaker operates with two poles in a single-phase configuration. It utilizes a thermal magnetic trip unit and features both long-time and instantaneous trip functions. With an interrupt r

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SQJD

This kit features a dual/twin branch mounting style and is engineered for configurations requiring a twin mount. The SQJD comes with mounting straps necessary for installation and operates at a rated

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B130H00S01

Ideal for diverse applications, the B130H00S01 operates at voltages of 120/240 AC and supports single-pole configurations. This circuit breaker has an interrupt rating of 22 kA, ensuring dependable pr

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B2125HH

This circuit breaker can handle 2 AWG to 1/0 AWG wire sizes and features a thermal magnetic protection mechanism. It includes functions for long time and instantaneous trip responses and is suitable f

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B22000S01

This model is designed for single-phase applications and provides a reliable trip mechanism with both shunt and thermal magnetic capabilities. It has an interrupt rating of 10 KA and works at a freque

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B220EG

This circuit breaker functions efficiently within a temperature range of 0°C to 40°C for both operation and storage. It can endure humidity levels up to 80% without condensation, and is rated for inst

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B23000S01

This circuit breaker provides functions including long-time and instantaneous trips, incorporating thermal protection for enhanced safety. It is designed for bolt-on mounting and operates effectively

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BF240A

This circuit breaker has a B frame type and offers an interrupting rating of 10 kAIC at 240 volts. The maximum allowable ambient humidity for operation is 80% relative humidity, provided that condensa

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