Willow Technologies offer PCB motor control relays from Durakool

Capable of switching up to 45A at 250V AC, the DG38L is a Durakool motor control DC relay, available from Willow Technologies.

Durakool’s DG38L PCB power relay switches features a magnetic arc blowout which enables the relay to switch 50 per cent higher DC voltage than other relays of its type. Typically, this style of relay, which has an industry standard footprint, can only switch 30A at 24V DC/240V AC, points out Willow Technologies. The DG38L handles voltages up to 80V DC (as an option) or 45A at 28V DC as standard. This is 50 per cent more than is usual for this style of relay.

The DC motor control relay measures a compact 32.2 x 27.5 x 28mm and is designed to switch in applications where the DC voltage exceeds 24V DC. As the relay opens it will pull an arc, explains Willow Technologies. With other relays of this type, if the contact gap is not big enough, the arc will not go out until the relay is damaged. An internal magnet deflects the arc from the contact as the relay opens, thus extinguishing the arc.

Another advantage of the DG38L, according to Willow Technologies, is that it offers PCB mounting without the need for high current or high voltage tracks on the PCB. Engineers can also easily replace inferior products or simply upgrade without the need for redesign. In addition, the P674 version of this relay has a maximum switching voltage of 80V DC at 20A for DC load control.

The DG38L has shielded fast-on blades for power terminals, which eliminate the need to put high currents and voltages on to the PCB. Its standard contact material is AgSnOInO. It is equipped with PCB and QC (fast-on) terminals and is designed to fit an industry standard footprint. The DG38L can be used for applications that require high current switching and higher voltage DC switching, for example for DC motor control (loads), winches, stair lifts, CNC machines, garage door motors, solar energy controllers, battery and wind power systems.

http://www.willow.co.uk

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