Installation Manual

30
ElectroMelt System
Design Guide
TraceGuard 277™
Ground-Fault Protection Device (GFPD)
For Use with EM2-XR
Self-Regulating Heating Cable
The TraceGuard 277 GFPD (Square D EHB-EPD) is a single-pole, thermal-
magnetic circuit breaker with equipment ground-fault protection. The GFPD is
rated for use with 480/277-Vac heat-tracing systems with a maximum load of
40 A. It is used to provide overcurrent and equipment ground-fault protection,
but not to protect people from the hazard of electrical shock. The ground-fault
trip level of the 277-volt GFPD is 30 mA. The GFPD is available in bolt-on con-
struction for installation in Square D's EHB panelboards. It comes in two ver-
sions, a base unit and a unit with bell alarm contacts.
Description
Specifications
Manufacturer Square D
Breaker frame E4
Amp rating 15 A to 50 A (refer to tables below)
UL interrupting rating: 120 Vac - 25 kA
277 Vac - 2 kA
125 Vdc - 5 kA
Description Ground-fault protection device
Packaging One circuit breaker and relay per kit
Shipping weight 15 pounds each
Catalog / Part No.: Amperes Base Unit Catalog No. Part No.
15 A GFPD EHB14015EPD 984563
20 A GFPD EHB14020EPD 833637
30 A GFPD EHB14030EPD 605703
40 A GFPD EHB14040EPD 021803
50 A GFPD EHB14050EPD 866711
Catalog / Part No.: Amperes Bell Alarm Unit Catalog No. Part No.
15 A GFPD EHB14015EPD2100 984563
20 A GFPD EHB14020EPD2100 833637
30 A GFPD EHB14030EPD2100 605703
40 A GFPD EHB14040EPD2100 021803
50 A GFPD EHB14050EPD2100 866711
Ordering Information