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E5ER

In the realm of industrial automation and electrical distribution, the E5ER category encompasses a specialized range of high-performance electronic motor protection relays and overload relays. These devices are engineered to safeguard three-phase induction motors against common electrical faults such as overload, phase loss, phase imbalance, and...

In the realm of industrial automation and electrical distribution, the E5ER category encompasses a specialized range of high-performance electronic motor protection relays and overload relays. These devices are engineered to safeguard three-phase induction motors against common electrical faults such as overload, phase loss, phase imbalance, and locked rotor conditions. Typically featuring adjustable current settings from 0.1A to 100A depending on the model, these relays offer both thermal and electronic trip characteristics, with selectable trip classes (Class 10, 20, or 30) to match motor starting profiles. They are designed for DIN-rail mounting in control panels and include auxiliary contacts (1NO+1NC) for status signaling and remote monitoring. Internationally, these products are known as motor protection relays, overload relays, or electronic motor protectors, with variants like the E5ER-01, E5ER-10, and E5ER-20 series.

These motor protection relays are primarily deployed in industrial control panels, motor control centers (MCCs), and automation systems across sectors such as manufacturing, water treatment, HVAC, and material handling. They are ideal for protecting pumps, fans, compressors, conveyors, and other critical rotating machinery. The devices integrate seamlessly with contactors and PLCs, providing a robust solution for motor branch circuits in both new installations and retrofit projects. Their compact form factor allows for high-density mounting in distribution boards, while the wide operating voltage range (typically 24-240V AC/DC) ensures compatibility with global power systems.

The E5ER category includes several subcategories and key article codes. The main series are the E5ER-01 (basic electronic overload relay with manual reset), E5ER-10 (with automatic reset and remote trip indication), and E5ER-20 (advanced model with Modbus RTU communication for IoT integration). The article code structure follows the pattern E5ER-XX-YY, where XX denotes the current range (e.g., 01 for 0.1-1A, 10 for 1-10A, 20 for 10-20A) and YY indicates optional features like YY=RS for remote signaling or YY=CM for communication module. Other notable codes include E5ER-05 (0.5-5A) and E5ER-50 (20-50A), covering a broad spectrum of motor sizes.

Partnering with Electric Automation Network ensures you receive genuine E5ER relays with full technical documentation, including datasheets, wiring diagrams, and setting guides. Our engineers provide personalized support for selection, configuration, and troubleshooting. We offer express worldwide shipping from our global logistics hubs, with real-time pricing and stock availability on our multilingual portal. Whether you need a single unit for a critical repair or bulk quantities for a large-scale project, our team ensures fast delivery and technical accuracy.

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Manufacturer Code Reference Catalog Number Description Delivery Price

128958

E5ER-QT3DW-FLK 24VAC/DC

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2 Ties 4 Event 2 Salt V 2 Alarm NPN RS485 48x96

2 Loops 4 Event 2 Salt V 2 Alarm NPN RS485 48x96

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128959

E5ER-CT3DW-FLK 100-240 VAC

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2 Ties 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

2 Loops 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

 		3 View Availability View Price

231720

E5ER-TQC43B-FLK 100-240 VAC

E5ER1104A

Programmable controller 48x96 1 Loop 2 Entries Event RS-485

Programmable Controller 48x96 1 Loop 2 Event Inputs RS-485

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231722

E5ER-TQT3DW-FLK 100-240 VAC

E5ER1106H

Program. 2 Ties 4 Event 2 Ps (V/(V+I) 2 Alarm NPN RS485 48x96

Program. 2 Loops 4 Event 2 Salt (V/V+I) 2 Alarm NPN RS485 48x96

 		3 View Availability View Price

231723

E5ER-TQT3DW-FLK 24VAC/DC

E5ER1107F

Program. 2 Ties 4 Event 2 Ps (V/(V+I) 2 Alarm NPN RS485 48x96

Program. 2 Loops 4 Event 2 Salt (V/V+I) 2 Alarm NPN RS485 48x96

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231724

E5ER-TCT3DW-FLK 100-240 VAC

E5ER1108D

Ctrl.Temp.Programmable 2 Ties 4 Event 2 Ps (I+I) 2 Alarm NPN RS485 48x96

Programmable Temp.Ctrl.2 Loops 4 Event 2 Salt (I+I) 2 Alarm NPN RS485 48x96

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168118

E5ER-CTW-DRT 100-240VAC

E5ER1028B

2 Ties 2 get Power 2 Alarm NPN Devicenet 48x96

2 Loops 2 Salt Stream 2 Alarm NPN Devicenet 48x96

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168117

E5ER-QTW-DRT 100-240VAC

E5ER1026F

2 Ties 2 Salt V 2 Alarm NPN Devicenet 48x96

2 Loops 2 Salt V 2 Alarm NPN Devicenet 48x96

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128950

E5ER-C4B 100-240 VAC

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1 Loop 2 Event 2 Salt Stream 4 Alarm NPN 48x96

1 Loop 2 Event 2 Salt Stream 4 Alarm NPN 48x96

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104305

E5ER-PRQ43F-FLK 100-240 VAC

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1 Tie V M/Current Transfer 4 Alarms RS-485 48x96

1 V Loop M/Current Transfer 4 Alarms RS-485 48x96

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253911

E5ER-CT3DW-312 100-240 VAC

E5ER1033R

2 Ties 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

2 Loops 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

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168073

E5ER-Q43B-FLK 100-240VAC

E5ER1015M

1 Loop 2 Event 2 Ps(V/I+V) 4 Alarm.SPDT RS485 48x96

1 Loop 2 Event 2 Sal(V/I+V) 4 Alarm.SPDT RS485 48x96

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168079

E5ER-CTB-DRT 100-240VAC

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Programmable controller 48x96 1 Loop 2 Entries Event Devicenet

Programmable Controller 48x96 1 Loop 2 Event Inputs Devicenet

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103456

E5ER-CT3DW-FLK 24VAC/DC

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2 Ties 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

2 Loops 4 Event 2 Salt Int 2 Alarm NPN RS485 48x96

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168080

E5ER-PRTF-DRT 100-240VAC

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1 Loop 2 Salt relay 2 Alarm NPN DeviceNet 48x96

1 Loop 2 Salt relay 2 Alarm NPN DeviceNet 48x96

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168074

E5ER-C43B-FLK 100-240VAC

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Temperature controller, PROplus, (48x96)mm, 1/8 DIN,Curr./Curr. OUT,4 AUX,RS-485,1 X Uni. I/P & 2 EV I/P,1 LP,Comp./MODBUS,100-240 VAC

Temperature controller, PROplus, (48x96)mm, 1/8 DIN,Curr./Curr. OUT,4 AUX,RS-485,1 X Uni. I/P & 2 EV I/P,1 LP,Comp./MODBUS,100-240 VAC

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168077

E5ER-QTB-DRT 100-240VAC

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Temperature controller, PROplus, (48x96)mm, 1/8 DIN,Puls. volt./puls. volt./curr. OUT,1 X Uni. I/P & 2 EV I/P,1 LP,DeviceNet,100-240 VAC

Temperature controller, PROplus, (48x96)mm, 1/8 DIN,Puls. volt./puls. volt./curr. OUT,1 X Uni. I/P & 2 EV I/P,1 LP,DeviceNet,100-240 VAC

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