relay
The Omron LY4 100/110VDC part of their relay is a single-pole double-throw (SPDT) power relay with normally open (NO) and normally closed (NC) contacts. This part is rated at 10A 250V AC and 5A 30V DC. It comes with a built-in diode for snubber circuit protection, which keeps surge voltages from damaging the contacts. It is UL and CSA approved, and compatible with PCBs. The LY4 100/110VDC is designed to provide reliable switching and polarized product design and offers variety of features, including a wide operating range, high switching capacity, surge voltage protection, wide contact gap, and long life.