Littelfuse SE-701-0U is a versatile relay with multiple configuration options. It operates at frequencies of 50, 60, and ASD. With optional conformal coating, it is suitable for various environments. The relay contacts can be configured as 1 Form A (N.O.) or 1 Form B (N.C.) for fail-safe or non-fail-safe operation. It supports front-panel or remote N.O. contact reset. It offers standard harmonic filtering, GF trip times ranging from 0.5 to 2.5 seconds, and is compatible with solidly or resistance grounded AC systems. Suitable for both AC and DC supply voltages of 120 or 240 V. It features latching or autoreset for the reset type. The GF trip level range is from 1% to 99% of CT-Primary Rating. It includes a front-panel switch for the test button and supports standard CT loop monitoring. It has an analog output voltage range of 0-5 V.