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1SBH136005R2040 ABB NFZ40EK-20 Electronic Coil Contactor 40A 24V AC Coil
ABB 1SBH136005R2040 NFZ40EK-20 is a 4-pole contactor relay with four normally open mechanically linked auxiliary contacts, a 12–20 V DC electronic coil, built-in surge protection and Push-in Spring terminals.
£67.76
Why Choose the ABB 1SBH136005R2040 NFZ40EK-20 Contactor Relay?
The ABB 1SBH136005R2040, also designated NFZ40EK-20, is a compact and energy-efficient 4-pole contactor relay designed for reliable switching of auxiliary and control circuits in industrial automation, machinery and electrical control systems. As part of the ABB NFZ contactor relay series, it provides four normally open mechanically linked auxiliary contacts for signalling, sequencing, interlocking and control functions.
The NFZ40EK-20 incorporates an electronic coil interface designed for a 12–20 V DC control voltage. ABB NFZ technology provides reduced holding coil consumption, accommodates control-voltage variations and includes built-in surge protection, helping simplify control-panel design by eliminating the need for an additional external coil suppressor. As a -20 coil version, correct polarity must be observed at the A1+ and A2- coil terminals.
Featuring Push-in Spring terminals, the NFZ40EK-20 enables fast, secure and reliable conductor connection without conventional screw tightening. Its compact 45 mm-wide construction, DIN rail or screw mounting capability and 16 A conventional free-air thermal current make it well suited to PLC-controlled machinery, motor control assemblies and modern industrial automation panels.
Key Advantages
- Compact 4-pole contactor relay for auxiliary and control circuits.
- 4 normally open mechanically linked contacts for signalling, sequencing and interlocking.
- 12–20 V DC electronic control coil for low-voltage DC control systems.
- Push-in Spring terminals simplify installation and reduce control-panel wiring time.
- Integrated surge protection removes the need for an additional external coil suppressor.
- Low holding coil consumption makes the NFZ series suitable for energy-efficient automation systems.
Key Features
- ABB NFZ40EK-20 contactor relay.
- 4 auxiliary contacts with 4 NO + 0 NC configuration.
- 12–20 V DC rated control circuit voltage.
- 16 A conventional free-air thermal current.
- 6 A AC-15 operational current at 24–127 V.
- 3 A AC-15 operational current at 400–440 V.
- Rated auxiliary circuit operational voltage up to 690 V.
- Electronic coil interface with built-in surge suppression.
- Push-in Spring terminal connections for fast and secure wiring.
- DIN rail or screw mounting for flexible control-panel installation.
Reliable Auxiliary Switching for Industrial Automation
Contactor relays such as the ABB NFZ40EK-20 provide electrically controlled switching for auxiliary and control circuits rather than directly switching the main power supply to a motor. Its four normally open contacts allow several signalling, sequencing, interlocking and automation functions to be operated simultaneously from a single control signal.
The ABB NFZ series combines an electronic coil interface with mechanically linked auxiliary contacts and integrated surge suppression. The NFZ40EK-20's low-voltage DC coil, reduced holding consumption and Push-in Spring connections make it particularly useful in modern PLC-controlled machinery and automation systems where compact installation and dependable switching are important.
Typical Applications
- PLC and industrial automation control panels.
- Industrial machinery control circuits.
- Motor starter and motor control assemblies.
- Electrical interlocking and sequencing circuits.
- Status indication and signalling systems.
- Conveyors and material handling equipment.
- OEM machinery and production equipment.
Technical Specifications
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| Terminal Type | Push-in | |
|---|---|---|
| Coil Voltage Range | 12 V | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 12 V DC | |
| Device Type | Contactor relay | |
| Coil Type | DC | |
| Current AC-1 | 16 A | |
| Manufacturer | ABB | |
| Series | NFZ Contactor Relays | |
| Model | NFZ40EK-20 | |
| Order code | 1SBH136005R2040 | |
| Product type | Contactor relay | |
| Number of poles | 4 | |
| Normally open contacts | 4 | |
| Control voltage | 12–20 V DC | |
| Control voltage type | DC | |
| Coil polarity | A1+ / A2- | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage | 690 V | |
| Conventional free-air thermal current | 16 A | |
| Rated operational current AC-15 at 24–127 V | 6 A | |
| Rated operational current AC-15 at 220–240 V | 4 A | |
| Rated operational current AC-15 at 400–440 V | 3 A | |
| Rated operational current AC-15 at 500 V | 2 A | |
| Rated operational current AC-15 at 690 V | 2 A | |
| Rated short-time withstand current | 100 A for 1 s / 140 A for 0.1 s | |
| Rated impulse withstand voltage | 6 kV | |
| Terminal type | Push-in Spring terminals | |
| Protection rating | IP20 at auxiliary and coil terminals | |
| Coil technology | Electronic coil interface with built-in surge suppression | |
| Mounting type | DIN rail / screw mounting | |
| Maximum mechanical switching frequency | 6000 cycles per hour | |
| Maximum electrical switching frequency AC-15 | 1200 cycles per hour | |
| Maximum operating altitude | 3000 m | |
| Dimensions (H × W × D) | 92.3 × 45 × 77 mm | |
| Weight | approx. 0.315 kg | |
| EAN / GTIN | 3471523153202 |
Frequently Asked Questions
What is the ABB 1SBH136005R2040 used for?
The ABB 1SBH136005R2040 is a 4-pole contactor relay used for switching auxiliary, signalling, interlocking and control circuits in industrial machinery, motor control equipment and automation panels.
How many contacts does the ABB NFZ40EK-20 have?
The NFZ40EK-20 has four normally open auxiliary contacts and no normally closed contacts.
What control voltage does the NFZ40EK-20 require?
The electronic coil is designed for a 12–20 V DC control supply. As this is the -20 coil version, the A1+ and A2- terminal polarity must be observed.
Does the NFZ40EK-20 include surge protection?
Yes. The NFZ40EK-20 incorporates built-in surge protection, so an additional external coil surge suppressor is not normally required.
What type of terminals does the NFZ40EK-20 use?
The NFZ40EK-20 uses Push-in Spring terminals, providing fast and secure conductor connections while helping reduce wiring time in industrial control panels.
Trusted by Industrial Automation Professionals
ABB NFZ contactor relays provide dependable auxiliary switching for industrial control and automation systems, combining electronic coil technology, mechanically linked contacts, integrated surge protection and efficient Push-in Spring wiring.
