Rating : 50mA,12VDC. Electrical life : 300,000 cycles min. Contact resistance : 100m ohm max. Insulation resistance : 100M ohm min. at 500VDC. Dielectric strength : 250VAC/1minute. Circuit : single pole, single throw Temperature range : -25 to + 70 degrees Storage temperature range : -30 to +80 degrees Base : High-temp. thermoplastic Cover : Stainless steel Stem : Brass for TM-533 Contact disc : Phosphor bronze with silver cladding. Terminal : Brass with silver cladding. Ultra sized, compact designed