The PR60 is a “monostable relay containing one coil and one resting position,” whereas the PR80 is a “bistable relay containing two coils and two resting positions,” explains E-T-A. The PR80 is turned on by an impulse and remains on until another impulse is turned on. They are designed for continuous loads up to 300A and current peaks up to 2400A. The relays can be operated from the driver’s cabin it needed to protect the circuit.
Both models are environmentally sealed with protection standards of IP67 and with a shock rating of 40 g and a vibration rating of 6 g. The main load connections are M8 (100A and 200A) or M10 (200A and 300A) stud terminals with an insulated barrier. They are available in voltage ratings of 12V, 24V, and 48V.
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