EL731 Series - AC/DC Sensitive Earth-Leakage Relay

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Operates on AC resistance grounded systems and DC grounded systems.
The EL731 is a microprocessor-based AC/DC Sensitive Earth-Leakage Relay that offers complete coverage for all frequencies from 0-6,000 Hz. Two CT’s are required for the entire frequency range, or one CT can be used for only low-or high-frequency detection. An RTD/PTC sensor input allows over-temperature protection. The EL731 offers metering capabilities, password-protected alarm and trip settings and optional network communications. It is used to add low-level ground-fault protection to variable-speed drives, and to dc currents.

COMPUTER TO RELAY CONNECTION

Connect the EL731 to the network using a standard Ethernet patch cable. Use of a crossover cable to connect the EL731 directly to the computer running IP-Config is not recommended. A typical router will assign an IP address to all connected computers that are using DHCP. The EL731 does not support the use of DHCP. If the EL731 is being set-up for first time, it is recommended to only have one EL731 connected to the network to prevent communication errors.

Click here to download the COMPUTER TO RELAY CONNECTION Diagram.

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
VAC
Supply
Voltage
VDC
Relay Contacts ConfigCommunicationsIEEE Device NumbersRelay
Contact
Operating
DimensionsWeight (lbs/g)Auto Manual ResetConformally coatedFrequencyGF Trip Level AGF Trip Time sHarmonic FilteringMountingStockCompare
EL731-00-X01.9H X 3.8W X 5.0D0 - 6000
EL731-01-X0DeviceNet1.9H X 3.8W X 5.0D0 - 6000
EL731-02-X0Profibus1.9H X 3.8W X 5.0D0 - 6000
EL731-03-X0EtherNet
IP
1.9H X 3.8W X 5.0D0 - 6000
EL731-04-X0Modbus TCP1.9H X 3.8W X 5.0D0 - 6000
EL731-10-X01.9H X 3.8W X 5.0D0 - 6000
EL731-11-X0DeviceNet1.9H X 3.8W X 5.0D0 - 6000
EL731-12-X0Profibus1.9H X 3.8W X 5.0D0 - 6000
EL731-13-X0EtherNet
IP
1.9H X 3.8W X 5.0D0 - 6000
EL731-14-X0Modbus TCP1.9H X 3.8W X 5.0D0 - 6000
EL731-20-X01.9H X 3.8W X 5.0D0 - 6000
EL731-21-X0DeviceNet1.9H X 3.8W X 5.0D0 - 6000
EL731-22-X0Profibus1.9H X 3.8W X 5.0D0 - 6000
EL731-23-X0EtherNet
IP
1.9H X 3.8W X 5.0D0 - 6000
EL731-24-X0Modbus TCP1.9H X 3.8W X 5.0D0 - 6000
EL731-00-00120 / 240120 / 2403 Form C (N.O./N.C.)None38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-00-10120 / 240120 / 2403 Form C (N.O./N.C.)None38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-01-00120 / 240120 / 2403 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-01-10120 / 240120 / 2403 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-02-00120 / 240120 / 2403 Form C (N.O./N.C.)Profibus38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-02-10120 / 240120 / 2403 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-03-00120 / 240120 / 2403 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-03-10120 / 240120 / 2403 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-04-00120 / 240120 / 2403 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-04-10120 / 240120 / 2403 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-10-0024483 Form C (N.O./N.C.)None38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-10-1024483 Form C (N.O./N.C.)38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-11-0024483 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-11-1024483 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-12-0024483 Form C (N.O./N.C.)Profibus38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-12-1024483 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-13-0024483 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-13-1024483 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-14-0024483 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-14-1024483 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-20-00243 Form C (N.O./N.C.)None38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-20-10243 Form C (N.O./N.C.)38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-21-00243 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-21-10243 Form C (N.O./N.C.)DeviceNet38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-22-00243 Form C (N.O./N.C.)Profibus38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-22-10243 Form C (N.O./N.C.)Profibus38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-23-00243 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-23-10243 Form C (N.O./N.C.)EtherNet - IP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-24-00243 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
EL731-24-10243 Form C (N.O./N.C.)Modbus TCP38 - 49 - 50G - 50N - 51G - 51N - 79GFail-safe / Non Fail-safe1.9 H x 3.8 W x 5 D in.0 KgLatching trip - Non-latching alarmStandard0 - 60000.03 - 5.000.05 - 2.00StandardDIN (optional) - Panel - Surface (optional)Check
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