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B&R ECNT43-0 — NT43 Power Supply Module
The B&R ECNT43-0 (type NT43) is a regulated 24 V DC power supply module with a rated output of 100 W, designed for B&R’s classic MULTI / MIDI rack systems (Multicontrol family). It supplies stable, monitored 24 V DC power to automation controllers, I/O modules and expansion components, and is notable for its extended diagnostics functions for system status monitoring and fault detection. Manufactured by B&R (Bernecker & Rainer) of Austria, it remains a common part for maintenance and retrofit of legacy MULTI / MIDI installations.
- Regulated 24 V DC output, 100 W rated capacity
- For B&R MULTI / MIDI modular racks (Multicontrol)
- Extended diagnostics functions
- Front-panel status LEDs + Ready relay output
- Circuit protection via replaceable fuse
- B&R type: NT43
Key Features & Functions
Regulated 24 V DC / 100 W Output
Provides a stable, regulated 24 V DC supply with 100 W rated capacity to power controllers, I/O modules and expansion components within the rack.
Extended Diagnostics
Includes extended diagnostic functions for system status monitoring, fault detection and predictive maintenance — distinguishing the NT43 from the lower-rated NT40.
Status LEDs & Ready Relay
Front-panel LEDs (such as BAT OK, DC OK, Ready and DC ON) give at-a-glance status, while an integrated Ready relay output terminal block supports system signalling and integration.
MULTI / MIDI Rack Integration
Designed to slot into B&R MULTI and MIDI modular rack systems, integrating directly with the controller and I/O modules of the Multicontrol family.
Technical Specifications
| Part Number | ECNT43-0 |
|---|---|
| B&R Type | NT43 |
| Brand | B&R (Bernecker & Rainer) |
| Product Range | MULTI / MIDI (Multicontrol) |
| Module Type | Power supply module |
| Output Voltage | 24 V DC (regulated) |
| Rated Power | 100 W |
| Diagnostics | Extended diagnostics functions |
| Status Indication | Front-panel LEDs (BAT OK, DC OK, Ready, DC ON) |
| Output Terminals | Ready relay terminal block |
| System Compatibility | MULTI and MIDI modular racks |
| Country of Origin | Austria |
Source note: The core rating (24 V DC, 100 W) and MULTI / MIDI compatibility are corroborated across multiple distributor listings. Details such as the exact fuse rating (reported as 250 V / 10 A slow-blow), input voltage designation and operating-temperature range vary between reseller pages and should be confirmed against the official B&R datasheet for the NT43 before purchase.
Typical Application Scenarios
- Rack Power Supply: supplying 24 V DC bus power to automation modules and I/O components in MULTI / MIDI racks.
- Machine & Plant Control: powering controllers and I/O in industrial control cabinets.
- Legacy System Maintenance: keeping existing Multicontrol installations running with genuine spare parts.
- Retrofit & Repair: replacing failed or ageing power supply units in established systems.
- Monitored Power Distribution: installations that require diagnostic status monitoring of the supply.
Frequently Asked Questions
What is the B&R ECNT43-0?
It is a B&R NT43 power supply module providing a regulated 24 V DC output rated at 100 W, designed for B&R MULTI / MIDI modular rack systems.
What is the output rating?
It delivers a regulated 24 V DC output with a rated capacity of 100 W.
What is the difference between ECNT43-0 and ECNT43-1?
Both are 24 V DC / 100 W NT43 power modules for MULTI / MIDI racks. The two variants differ in their version/configuration; confirm the exact differences and compatibility in the official B&R documentation before substituting one for the other.
Which systems is it compatible with?
It is designed for B&R MULTI and MIDI modular racks. Confirm the exact rack configuration and system revision against official documentation.
Does it have diagnostic functions?
Yes — the NT43 includes extended diagnostics functions for status monitoring and fault detection, with front-panel status LEDs and a Ready relay output.
Where can I find the official datasheet?
Official technical documentation is available from B&R Industrial Automation and authorized distributors. Verify all specifications there before purchase.
