The L115F1 Series with switching capacity up to 50 amp and the L114 Series, with switching capacity up to 16 amp. Both series are UL/cUL approved and can withstand heavy contact load with strong shock and vibration resistance. The L115F1 Series is a single coil relay and the L114 is available in both single coil and double coil. The CIT Relay & Switch Latching relays are UL F class rated standard and are ideal for energy smart applications. For more information please visit: http://www.citrelay.com/relays_latching.shtm