The auction is for a high power relay as shown at the picture. Pulled out of high power military transmitter. Good for remote antenna switch, power amplifier band switch etc. Handling power no less than 3 kW. Two silver contacts at the top of ceramic stands are shortened when applying 20 - 24 VDC. Then control voltage is reduced to  7 V on the coil by special contacts set aside with additional resistor about 50 Ohm (not supplied) . Please see a close view picture for wiring details.

Powering voltage 24V (+ or -) is connected to the left terminal of the coil. Resistor 50 Ohm is also soldered to this point.  The right coil terminal is connected to the lower switching contact. The upper and central contacts are shortened to each other and the other wire of powering voltage as well as the other end of the resistor is applied here. New condition Never used.

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