Littelfuse, Inc. Monitor - Relay Output 50R20029

The 50R20029 is a single-phase voltage monitor designed to protect motors in applications such as compressors, air conditioners, and pumps by deactivating its output relay upon detecting low voltage and reactivating after a restart delay. It operates on 190-240 V ac, with a trip delay of 4 seconds and a selectable restart delay of 2-300 seconds, plus high-voltage detection. The relay has a 10 A @ 240 V ac general-purpose rating and is encased in a housing measuring 74.4 mm H × 133.9 mm W × 74.9 mm D, mounted with #8 screws. It complies with UL 508 and IEC 60947-6-2 standards, operates from -20°C to 70°C, and meets IEC 61000-4-2 and IEC 61000-4-4 ESD and transient immunity levels.