SINGLE PHASE TIME OVERCURRENT RELAYS

These economical, microprocessor, single-phase, time overcurrent relays provide overcurrent protection for phase and ground applications.

Self powered from 50/60Hz systems, available for 1 or 5 amp CTs
Replicates decaying reset of electromechanical relays, even when the relay is powered down (optional)
Independent instantaneous element
Drawout construction
Direct reading controls for settings
10 selectable curves and wide pickup range simplifies specifying and stocking

BE1-50/51B Time Overcurrent Relay

Available in S1 style case or A-1 case (option)
Testable in case

Download Bulletin UHD for more information or download the instruction manual.

BE1-50/51B Retrofit Kits
GE Models	Retrofit Relay Packages	Number of Instantaneous Elements	Model Number
IAC Retrofits	Retrofit kit for IAC relays Cradle plugs into existing case. Adapter plate and new cover included.	1	BE1-50/51B-214 (for 1 amp systems, order BE1-50/51B-225)
	Complete IAC replacement relay with same terminal connections as IAC units. Available in S1 style case.	1	BE1-50/51B-218 (for 1 amp systems, order BE1-50/51B-228)
	Retrofit kit for IAC relays Cradle plugs into existing case. Adapter plate, connection plug and new cover included.	2	BE1-50/51B-237 (for 1 amp systems, order BE1-50/51B-238)
	The 235 and 236 models include a second low-set instantaneous with an independent contact that can be connected to create a “maintenance” mode. For details on how these models can help meet NESC Arc Flash requirements, see the Plug and Play Feature Flyer.

	Retrofit kit for IAC66K relay Cradle plugs into existing case. Adapter plate, connection plug and new cover included.	2	BE1-50/51B-230 (for 1 amp systems, order BE1-50/51B-234)
	For details on how the 230 and 234 models replace the electro-mechanical overcurrent motor protection relay type IAC66K, see Application Note PC-IAC66K or the Plug and Play Feature Flyer.

SFC Retrofit	Retrofit kit for SFC relays Cradle plugs into existing case. Adapter plate and new cover included.	1	BE1-50/51B-229 (See bulletin for compatibility information)
Download Bulletin UHK for more information on Basler relay retrofit solutions or download the applicable instruction manual.
BE1-50/51B Retrofit Kits
Westinghouse Models	Retrofit Relay Packages	Number of Instantaneous Elements	Model Number
CO Retrofits	Retrofit kit for CO relays Cradle plugs into existing case. New cover included.	1	BE1-50/51B-219 (for 1 amp systems, order BE1-50/51B-226)
	Retrofit kit for CO relays Cradle plugs into existing case. New cover included.	2	BE1-50/51B-235 (for 1 amp systems, order BE1-50/51B-236)
	The 237 and 238 models include a second low-set instantaneous with an independent contact that can be connected to create a “maintenance” mode. For details on how these models can help meet NESC Arc Flash requirements, see the Plug and Play Feature Flyer.
Download Bulletin UHK for more information on Basler relay retrofit solutions or download the applicable instruction manual.

BE1-50/51M Time Overcurrent Relay

Compact size C-1 case (6.88"x4.00"x7.00" deep)
Requires external test provisions
A rack mounting plate is available to vertically mount
four BE1-50/51M units in a standard 19-inch rack.

BE1-50/51M in 4 unit rack


BE1-50/51M for Horizontal Mounting

Download Bulletin UHE for more information or download the instruction manual.