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1SBL417210R7200 ABB AF75-40-00RT 20-60 V DC 4-Pole Contactor
ABB AF75-40-00RT 1SBL417210R7200 is a 4-pole AF Small contactor with four normally open main contacts, a 20–60 V DC electronic coil interface and a 125 A AC-1 rating at 690 V and 40 °C for railway and industrial power switching.
£398.50
Why Choose the ABB AF75-40-00RT 20–60 V DC Contactor?
The ABB AF75-40-00RT is a robust 4-pole contactor designed for railway rolling stock and demanding industrial power-switching applications. This specific model, ABB order code 1SBL417210R7200, features a wide-range 20–60 V DC electronic control coil, four normally open main contacts and ring-tongue-compatible terminals for secure electrical connections.
Part of the ABB AF Small contactor range, the AF75-40-00RT is primarily intended for controlling non-inductive or slightly inductive loads, including resistance heating and lighting circuits. Its four-pole block design is rated for power circuits up to 690 V AC, while the electronic coil interface accommodates voltage variations common in battery-powered and rolling-stock control systems.
The AF75-40-00RT provides an AC-1 rated operational current of 125 A at 690 V and 40 °C. Built-in surge suppression, wide-range DC coil technology and compliance with railway shock, vibration, fire and smoke requirements make it particularly suitable for reliable switching in trains and other demanding electrical installations.
Key Advantages
- Heavy-duty 4-pole contactor with 4 normally open main contacts.
- Wide-range 20–60 V DC electronic control coil.
- 125 A AC-1 operational current at 690 V and 40 °C.
- Main circuit operation up to 690 V AC.
- Built-in surge suppression for the electronic coil circuit.
- Ring tongue ferrule connections provide secure wiring for demanding environments.
- Designed for railway rolling stock with enhanced shock and vibration resistance.
- Suitable for operation from -40 to +70 °C.
Key Features
- ABB AF75-40-00RT contactor.
- 4 normally open main poles.
- No built-in auxiliary contacts.
- 20–60 V DC rated control circuit voltage.
- Electronic wide-range coil interface.
- 125 A AC-1 rating at 690 V and 40 °C.
- 105 A AC-1 rating at 690 V and 55 °C.
- 85 A AC-1 rating at 690 V and 70 °C.
- Built-in coil surge suppression.
- Front and side-mounted auxiliary contact blocks can be added when required.
- Ring tongue ferrule terminal arrangement for secure connections.
Reliable Power Switching for Railway and Industrial Systems
The ABB AF75-40-00RT combines four main switching poles with an electronic coil interface designed to tolerate the voltage variations encountered in battery-powered railway systems. Its 20–60 V DC control range encompasses commonly used 24, 33 and 48 V DC railway control voltages while providing distinct and dependable contactor operation.
Built-in surge suppression helps protect associated control electronics from switching transients, while compliance with IEC 61373 Category 1 Class B supports operation in environments subject to railway shock and vibration. The contactor can also be expanded with compatible ABB front- and side-mounted auxiliary contact blocks when additional signalling or interlocking contacts are required.
Typical Applications
- Railway rolling-stock electrical systems.
- Resistance heating circuits.
- Industrial lighting control.
- Non-inductive and slightly inductive loads.
- Industrial power distribution and switching circuits.
- Battery-powered control and automation systems.
Technical Specifications
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| Terminal Type | Ring tongue | |
|---|---|---|
| Series | AF Small / AF75 | |
| ABB order code | 1SBL417210R7200 | |
| Product type | 4-pole contactor | |
| Number of poles | 4 | |
| Main contacts | 4 N.O. | |
| Built-in auxiliary contacts | 0 N.O. + 0 N.C. | |
| Rated control circuit voltage | 20–60 V DC | |
| IEC 60077 control voltages | 24 / 33 / 48 V DC | |
| Main circuit rated operational voltage | up to 690 V AC | |
| Rated operational current AC-1 at 690 V / 40 °C | 125 A | |
| Rated operational current AC-1 at 690 V / 55 °C | 105 A | |
| Rated operational current AC-1 at 690 V / 70 °C | 85 A | |
| Rated operational current AC-3 at 380 / 400 V | 75 A | |
| Rated operational power AC-3 at 380 / 400 V | 37 kW | |
| Rated operational power AC-3 at 415 V | 40 kW | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 8 kV | |
| Coil technology | Electronic wide-range DC coil interface | |
| Surge suppression | Built in | |
| Terminal type | Ring tongue ferrule connection | |
| Operating temperature | -40 to +70 °C | |
| Shock and vibration | IEC 61373 Category 1 Class B | |
| Railway standards | IEC 60077 and EN 50155 applicable requirements | |
| Fire and smoke compliance | EN 45545 HL2 / HL3 | |
| Dimensions (H × W × D) | 110 × 92 × 119.5 mm | |
| Weight | approx. 1.42 kg | |
| Product group | Contactors AF Small |
Frequently Asked Questions
What is the ABB AF75-40-00RT used for?
The ABB AF75-40-00RT is a 4-pole contactor designed primarily for controlling non-inductive or slightly inductive loads in railway rolling stock and industrial power circuits.
What control voltage does the AF75-40-00RT require?
This specific model, ABB order code 1SBL417210R7200, uses a wide-range 20–60 V DC electronic control coil.
How many main contacts does the AF75-40-00RT have?
The AF75-40-00RT has four normally open main contacts and no built-in auxiliary contacts.
What is the AC-1 current rating of the AF75-40-00RT?
The contactor is rated at 125 A AC-1 at 690 V and 40 °C, reducing to 105 A at 55 °C and 85 A at 70 °C.
Is the AF75-40-00RT suitable for railway applications?
Yes. The contactor is designed for rolling-stock applications, with shock and vibration performance to IEC 61373 Category 1 Class B and fire and smoke compliance to EN 45545 HL2 / HL3.
Trusted ABB Switching for Rolling Stock
ABB AF railway contactors combine wide-range electronic coil technology, robust four-pole switching and railway-qualified construction to provide dependable control of electrical loads in rolling-stock and demanding industrial applications.
