REF542 Bay Control and Protection Unit - ABB Bus Coupler Module SPTU 240 R4: 80–265 V

SPTU 240 R4: 80–265 V DC/AC

Length: 190 mm

5 Mbps (RS485)

500 V between Form C circuits or Form A groups

REF542 Bay Control and Protection Unit - ABB Bus Coupler Module SPTU 240 R4: 80–265 VOverview REF542 is an ABB bay control and protection unit that combines the functions of a protection relay and a control device, widely used in switchgear for power distribution. Identification Product No.: REF542 Type: Bay Control and Protection Unit Manufacturer: ABB Functionality Combined role: Protection relay + control device Application: Power distribution switchgear worldwide Concept: Designed for continuous evolution to protect customer