BE3-25 Sync Check Relay

BE3-81OT
Frequency Relay
with Time Delay

Basler Electric offers a line of industrial grade BE3 Protection Relays. These relays offer high quality with an increased level of environmental hardening. They are:

UL recognized
CSA certified
CE compliant

They also meet:

VDE 0875 Level N for RFI screening
ANSI C37.90a for surge withstand
BS EN61010 for safety
impulse testing per the EMC directives at 5kv

See Bulletin ULX for Standards, Dimensions and Accessories for the entire line, which includes:

Model No.	Relay Type	Bulletin
BE3-25	Synchronizing Check Relays	ULA
BE3-27, BE3-59, BE3-27/59	AC Voltage Relays	ULB
BE3-27T, BE3-59T, BE3-27T/59T	AC Voltage Relays with Time Delay	ULC
BE3-32	Reverse Power Relays	ULD
BE3-37, BE3-51, BE3-37/51	AC Current Relays	ULE
BE3-47	Phase Sequence Relays	ULF
BE3-47N, BE3-47N/27	Phase Balance Relays	ULG
BE3-49R (3RTD) BE3-49R (6RTD)	Temperature Relay	ULH
BE3-49R (3RTD) BE3-49R (6RTD)	Temperature Relay	ULI
BE3-49TH, BE3-49TL	Thermocouple Relays	ULJ
BE3-74SH, BE3-74SL, BE3-74SD	Millivolt Sensing Alarm Relays	ULN
BE3-74TL, BE3-74TH, BE3-74TD	Milliamp Sensing Alarm Relays	ULO
BE3-74VL, BE3-74VH, BE3-74VD	DC Voltage Sensing Alarm Relays	ULP
BE3-76SH	DC Overcurrent Relay with Inverse Time Delay	ULR
BE3-81O, BE3-81U, BE3-81O/U	Frequency Relays	ULL
BE3-81OT, BE3-81UT, BE3-81OT/UT	Frequency Relays with Time Delay	ULM

BE3-25 Synchronizing Check Relays

The BE3-25 is a paralleling relay that ensures that two ac supplies are synchronized. For a system to be synchronized, the frequency, phase angle, and voltage must be within preset limits.

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

BE3-27, BE3-59, BE3-27/59 AC Voltage Relays

The BE3 ac voltage relays provide voltage monitoring and protection in both single and 3 phase systems. It can be used in applications such as:

utility mains failure
regulation of power supplies
protection of voltage sensitive equipment

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

BE3-27T, BE3-59T, BE3-27T/59T AC Voltage Relays

An external time delay control with adjustment from 200ms to 10 seconds is provided with these BE3 ac voltage relays. They provide voltage monitoring and protection in both single and 3 phase systems.

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

BE3-32 Reverse Power Relays

The BE3-32 relays monitor the direction of power from ac generators. If current flow from the generator becomes reversed and exceeds the adjustable setting, the relay will trip.

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

BE3-32
Reverse Power Relay

BE3-37, BE3-51, BE3-37/51 AC Current Relays

Under, over and combined under/over units are available in this BE3 ac current relay. They provide current monitoring and protection in both single and 3 phase systems.

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

BE3-47 Phase Sequence Relays

The BE3-47 phase sequence relays provide phase sequence protection. It is used to ensure the sequence is correct when connecting 3 phase loads.

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

BE3-47N, BE3-47N/27 Phase Balance Relays

The BE3-47N phase relays can detect the following conditions in 3 phase three or four wire systems: phase unbalance, phase loss, phase reversal, and phase sequence.

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

BE3-49R (3RTD) Temperature Relay

The BE3-49R monitors 3 individual RTDs (resistance temperature detectors) and provides LED indication for which RTD is at the highest temperature, as well as a mA output signal proportional to the temperature of the highest RTD. The mA output signal may be fed to an analog or digital meter scaled in temperature or to a computer system.

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

BE3-49R (6RTD) Temperature Relay

The BE3-49R monitors 6 individual RTDs (resistance temperature detectors) and provides LED indication for which RTD has exceeded the set point temperature.

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

BE3-49TH, BE3-49TL Thermocouple Relays

The BE3 thermocouple temperature relays monitor remote temperature using thermocouple transducers and provide a relay signal if the temperature being monitored exceeds the preset limit.

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

BE3-74SH, BE3-74SL, BE3-74SD
Millivolt Sensing Alarm Relays

The BE3 dc millivolt sensing relays accept millivolt signals from shunts, sensors and transducers. It is commonly used to protect equipment from overcurrent in the dc charging system.

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

BE3-74TL, BE3-74TH, BE3-74TD
Milliamp Sensing Alarm Relays

The BE3 dc milliamp sensing alarm relays have endless applications and are designed to take inputs from transducers and transmitters, providing a relay operation when the transducer signal deviates outside the preset limit.

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

BE3-74VL, BE3-74VH, BE3-74VD
DC Voltage Sensing Alarm Relays

BE3-74TD
Milliamp Sensing Alarm Relay

The BE3 dc voltage sensing relays provide monitoring of battery voltage conditions, but can be used in any application where dc voltage levels are critical.

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

BE3-76SH
DC Overcurrent Relay with Inverse Time Delay

The BE3-76SH DC Overcurrent Relay is designed to provide overcurrent protection of DC circuits found in applications such as the excitation field of synchronous machines, transit systems, and DC substation systems.

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

BE3-76SH
DC OC Relay with Inverse Time Delay

BE3-81O, BE3-81U, BE3-81O/U Frequency Relays

The BE3 frequency relays provide monitoring, and if the frequency deviates outside the user-adjustable preset limits, the relay will operate.

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

BE3-81OT, BE3-81UT, BE3-81OT/UT
Frequency Relays with Time Delay

The BE3 frequency relays monitor the frequency of a system, and if the frequency deviates outside the user-adjustable preset limits, the relay will operate.

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