Saelig Introduces 3 kW Electronic Load for Testing Fuel Cells

Saelig Introduces 3 kW Electronic Load for Testing Fuel Cells

Saelig Company, Inc. launches Model PT04-FC 3kW Electronic Load which has been specifically developed to accommodate the testing of fuel cells as well as low-voltage power supplies, including 24V telecommunications power systems and supplies, according to their press release.

The load is simple and intuitive to operate and is housed in a 4U 19" rack-mount case, with two quiet temperature-controlled fans mounted on the front panel to provide forced air cooling. 

The rugged, reliable design of the PT04-FC provides Constant Current control from 0 to 120A on the 24V range setting and 0 to 60A on the 48V setting, with Constant Power, Constant Resistance, and Constant Voltage also available as standard operational modes, accessible via ATE/remote control. Weight has been minimized for easy transportation. 


The Model PT04-FC is also useful as a general-purpose variable electronic load. It is rated to operate continuously over the specified current and voltage ranges.

The standard model offers a differential 0 - 5V input for simple control systems, or the input can be paralleled for larger systems. 


A typical application might consist of an external DC power source to be tested (e.g. an individual battery, or battery pack, a power supply, or a telecom rectifier) connected to the PT04-FC's DC power connectors, with the Remote Control Box connected to the load. More than one PT04-FC load can be connected in parallel.

The standard CP, CR and CV modes are realized by the use of an analog processor circuit between the differential amplifier and load control circuit. 

This processor measures the DC input voltage to the load, then generates a current demand which gives the required level of the power, resistance or voltage that has been demanded.

The Mode control may be changed even while the load is sinking current, for which the PT04-FC has built-in protection. 

An over-temperature alarm monitors the heat-sink temperatures; if a pre-set limit is exceeded then an alarm sound is emitted, the fault output line is activated, and the load current is clamped to 0A until the heat-sink temperature has reduced sufficiently.

Made by Manatronics, the Australian ISO9001:2008 manufacturer whose load banks are in use all over the world, the PT04-FC 3kW Electronic Load is available now from their USA technical distributor Saelig Company Inc. 

About Saelig Company Inc.

Founded in 1988 in Rochester, New York, Saelig is a North American distributor with a growing reputation for finding and sourcing remarkable, unique test and measurement and control products and components for use in a wide variety of industries. 

Products lines are continuously added from sources across the globe and are offered at competitive prices, accompanied by full in-house technical support, exceptional customer service, and fast delivery.

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