Product explosive bolt specific parameters: Model AC-30 AC-50 AC-63 AC-100, current 30A 50A 63A 100A, voltage 220/380V, proof mark Exd IIBT4, protection class IP65, Poles 1P-N + PE 3P + PE 3P + N + PE. Ordering Information: users must specify when ordering current, voltage, number of poles, structure, explosion proof plug and quantity of signs; this product when used outdoors, it is recommended plus rain cover. The aftermarket products promise: If quality problems, within a year unconditionally, three-year warranty, please user ease of use!