Sylvania 7304 4U6-3 PM DC Relay 240V 3 NO 3 NC Contacts

The Sylvania 7304 4U6-3 PM DC Relay is a Bulletin 7304 Type PM DC relay with a 240V DC coil and six switching contacts: three normally open and three normally closed. This configuration provides three Form C contacts, enabling simultaneous control of multiple circuits from a single coil. The device belongs to the 7304 PM DC relay family originally marketed by Sylvania (and its Joslyn Clark/AO Smith lineage), and the 4U6-3 suffix denotes a specific coil/contacts variant within the 4U family. This relay is used in industrial control and automation applications where robust, isolated switching is required for multiple circuits or interlocking schemes powered from a 240V DC supply. Instances of the same Bulletin 7304 PM DC Relay line show other coil voltages and configurations (for example, 4U4-1 with 120V DC), underscoring a family approach to coil options while preserving three-changeover contacts in variants like 4U6-3.