TE Connectivity's (TE) KISSLING 31 Series Industrial Power Relays300A bi-stable relays are designed to operate in harsh environments. The series features electronic functions for pulse coil protection, a low-energy switching input for direct connection to an ECU, and an optional energy function for fail-safe shutoff when power is lost. The relays also feature an energy function for automatic shutoff in case of power loss for safety and reaction times in critical situations. TE KISSLING 31 Series Industrial Power Relays are designed for battery management and power distribution applications.