ABB REM620E-1G NBMNAAAAABC6BBN11G Motor Protection Relay

Description

ABB REM620E-1G NBMNAAAAABC6BBN11G Motor Protection and Control Relay

Product Introduction

Medium-voltage motor protection is not simply a matter of installing a relay with the correct family name. CT/VT arrangements, sensor inputs, binary I/O, communication hardware, firmware, and the configured protection functions all affect whether an IED can actually replace an installed unit. The ABB REM620E-1G NBMNAAAAABC6BBN11G belongs to ABB’s Relion 620 Series and is designed as a motor protection and control IED for demanding industrial motor applications. ABB documentation describes REM620 as a multifunction device combining protection, control, measurement, supervision, and communication functions.

For engineering procurement, the full order code matters more than the generic REM620 designation. ABB documents multiple hardware configurations, including conventional current/voltage inputs, sensor interfaces, binary I/O, optional communication modules, and different communication interfaces. The ABB REM620E-1G NBMNAAAAABC6BBN11G should therefore be matched against the existing relay’s terminal arrangement, protection configuration, communication requirements, firmware/connectivity package, and application file before it is treated as a replacement for an installed unit.

Key Technical Specifications

*These are REM620 platform capabilities documented by ABB; they should not be interpreted as proof that every interface or protocol is populated in the specific NBMNAAAAABC6BBN11G configuration. ABB explicitly notes that the maximum parameter set does not apply to every variant.

Application Scenarios & Engineering Considerations

Medium-Voltage Motor Protection

REM620 is intended for motor protection applications where protection, control, measurement, and supervision need to be consolidated into one numerical IED. ABB documentation identifies motor-specific protection and monitoring functions within the REM620 application environment.

REM620

Typical engineering duties can include:

• Phase and earth-fault protection
• Motor thermal and operating-condition supervision
• Starting and running-condition monitoring
• Current, voltage, power, frequency, and energy measurement
• Motor control and interlocking
• Event and disturbance recording
• Integration with plant or substation automation systems

Industrial Motor Control Systems

In a plant MV switchgear lineup, the relay normally sits between the motor feeder instrumentation and the higher-level control or electrical automation system. The platform supports Ethernet and serial communications, with IEC 61850, Modbus, IEC 60870-5-103, and DNP3 documented among its communication capabilities.

That makes configuration verification particularly important during DCS or electrical automation migration. A relay that carries the same family name may have materially different hardware depending on its order code.

Retrofit and Legacy Relay Replacement

The complete NBMNAAAAABC6BBN11G code should be recorded in the purchase specification, not shortened to “.” ABB’s documentation identifies different input modules and optional communication hardware, so the generic family number does not establish terminal compatibility.

For a retrofit, compare:

1. Existing terminal diagram
2. CT and VT ratings
3. Binary input/output allocation
4. Communication interface
5. IEC 61850 station configuration
6. Firmware and connectivity-package version
7. Protection setting groups
8. Existing disturbance/event-recording requirements

Related Products

• — Same 620 Series motor protection platform; exact hardware configuration varies by order code.
• ABB REM615 — Numerical motor protection and control relay from the 615 Series; architecture and configuration are different, so it should not be treated as an automatic drop-in replacement.
• ABB REM630 — Higher-capacity 630 Series motor protection and control platform; suitable applications and hardware architecture must be checked separately.
• ABB REF620 — 620 Series feeder protection and control IED; related platform but intended for feeder applications rather than being a direct motor-relay substitute.
• ABB RET620 — 620 Series transformer protection and control IED; same product family architecture but a different primary protection application.
• ABB Relion 620 Series communication modules — Optional communication hardware can affect the available physical interfaces and network topology.
• ABB PCM600 / Connectivity Package — Engineering and configuration environment used with applicable ABB protection IED versions; software compatibility must be checked against the relay firmware.

Engineer’s Guide: Field Pitfalls to Avoid

1. Do not order by “” alone

This is the most common procurement mistake. ABB’s documentation shows different internal hardware arrangements, including an AI/BI module, sensor input module, and optional communication module.

If the existing relay uses a particular CT/VT or sensor arrangement, the replacement needs to reproduce the required hardware—not merely the product family.

2. Check the complete order code

For this unit, is not decorative information. It identifies a particular configuration. A similar-looking order code may have different I/O, communications, or hardware.

3. Do not assume every communication protocol is installed

The platform documentation lists IEC 61850, Modbus, IEC 60870-5-103, and DNP3, together with several Ethernet and serial interface options. That does not mean every unit has every interface populated.

For an existing IEC 61850 installation, check the actual communication hardware and station configuration rather than relying on the family brochure.

4. Verify firmware and engineering software compatibility

The ABB parameter documentation explicitly states that the maximum parameter set does not apply to every variant and instructs users to use the parameter list associated with the corresponding connectivity package and product release.

This matters when replacing a legacy relay. Hardware can be correct while the engineering package, firmware, or configuration file is not.

5. Preserve the original protection settings separately

Before replacing an installed , export or document protection settings, logic, I/O mapping, communication parameters, event configuration, and station integration data. Do not assume that loading a generic configuration will reproduce the original relay behavior.

6. Match the terminal diagram before energization

ABB provides configuration-specific terminal diagrams. The wiring should be checked against the actual ordered configuration before field power-up.

FAQ

Is ABB REM620E-1G a PLC module?

No. It is a motor protection and control IED, not a conventional PLC CPU or distributed I/O module. Its role is electrical protection, measurement, supervision, control, and communication within a motor feeder or electrical automation system.

What is the main purpose of the ?

is designed for numerical protection and control of medium-voltage motors. ABB’s documentation covers motor protection functions together with measurement, control, supervision, event recording, disturbance recording, and communications.

Does this exact support IEC 61850?

IEC 61850 is part of the platform’s documented communication capabilities. The exact hardware and configured communication features still need to be confirmed against the complete order code and the relay’s configuration.

Can another replace ?

Not automatically. The replacement should match the complete ordering code, physical I/O, CT/VT or sensor inputs, communications hardware, firmware, and application configuration. A different configuration can require wiring or engineering changes.

What should be checked before buying a used ?

Check the full nameplate/order code, hardware revision, firmware version, terminal configuration, communication ports, display/HMI condition, stored configuration, and physical condition. If the unit is being purchased as refurbished or used, actual inventory condition should be verified rather than inferred from the listing.

Is suitable for DCS integration?

Yes, where the selected hardware and communication configuration support the required interface. The platform documents IEC 61850, Modbus, IEC 60870-5-103, and DNP3 communication options. The actual interface and protocol configuration must be checked for the specific order code.

What is the biggest procurement risk with this part?

The biggest risk is treating REM620E-1G as the complete specification. For this product family, the configuration code, hardware arrangement, firmware, and communication options determine whether a unit can reproduce the installed relay’s functions. The full identifier should remain on the purchase order and inspection checklist.