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1SBL417028R7200 ABB GAF75-10-00RT 20-60 V DC 1-Pole Contactor
ABB GAF75-10-00RT 1SBL417028R7200 is a 1-pole railway DC contactor with a 20–60 V DC electronic coil interface, a 100 A DC-1 rating at 440 V DC and specialised permanent-magnet arc control for demanding DC switching applications.
£544.15
Why Choose the ABB GAF75-10-00RT 20–60 V DC Contactor?
The ABB GAF75-10-00RT is a specialised 1-pole DC contactor designed for railway rolling stock and demanding DC switching applications. Identified by ABB order code 1SBL417028R7200, this model features a wide-range 20–60 V DC electronic coil interface and ring-tongue-compatible connections for secure installation in vibration-prone environments.
The GAF75-10-00RT is designed primarily for controlling shunt or series motors and resistive or slightly inductive DC loads. Its main pole incorporates an arc chute with permanent magnets specifically engineered for DC interruption, allowing the contactor to switch loads at operational voltages up to 1000 V DC when applied within the specified ratings.
Developed for rolling-stock environments, the GAF75-10-00RT provides resistance to shock and vibration in accordance with IEC 61373 Category 1 Class B and meets EN 45545 fire and smoke requirements for HL2 and HL3 hazard levels. Built-in surge suppression and an electronic DC coil interface further support dependable operation in battery-powered railway and industrial DC control systems.
Key Advantages
- Specialised 1-pole contactor for DC switching.
- Wide-range 20–60 V DC control circuit.
- 100 A DC-1 operational current at 440 V DC under specified conditions.
- Designed for switching applications up to 1000 V DC.
- Permanent-magnet arc chute engineered specifically for DC breaking.
- Built-in surge suppression protects the control circuit from coil transients.
- Railway-qualified shock, vibration, fire and smoke performance.
- Ring tongue ferrule connections support secure wiring in demanding installations.
Key Features
- ABB GAF75-10-00RT DC contactor.
- 1 normally open main pole.
- 20–60 V DC rated control circuit voltage.
- Electronic coil interface suitable for railway battery supplies.
- 100 A DC-1 rating at 440 V DC at ambient temperatures up to 55 °C.
- 35 A DC-3 / DC-5 operational current at 440 V DC.
- DC switching capability for loads up to 1000 V DC.
- Permanent-magnet arc control for reliable DC interruption.
- No built-in auxiliary contacts.
- Built-in surge suppression.
- Designed for connection using ring tongue ferrules.
Reliable DC Switching for Railway Applications
Interrupting high-voltage DC loads requires specialised contact technology because a DC arc does not naturally pass through a zero-current point as it does with alternating current. The ABB GAF75-10-00RT therefore uses an arc chute fitted with permanent magnets to control and extinguish the arc during switching. The indicated connection polarity must be observed to ensure correct operation.
The contactor's 20–60 V DC electronic coil interface, built-in surge suppression and railway-qualified mechanical construction make it particularly suitable for battery-powered rolling-stock control systems. It can also accept compatible front- or side-mounted auxiliary contact blocks when additional signalling or control contacts are required.
Typical Applications
- Railway rolling-stock electrical systems.
- Shunt and series DC motor control.
- Battery-powered traction auxiliary systems.
- Resistive and slightly inductive DC loads.
- High-voltage DC switching circuits.
- Industrial DC control and power systems.
Technical Specifications
| Series | GAF75 |
|---|---|
| ABB order code | 1SBL417028R7200 |
| Product type | 1-pole DC contactor |
| Main contacts | 1 N.O. |
| Auxiliary contacts | 0 N.O. + 0 N.C. |
| Rated control circuit voltage | 20–60 V DC |
| IEC 60077 supply control voltages | 24 / 33 / 48 V DC |
| Rated operational current DC-1 at 440 V DC | 100 A |
| Rated operational current DC-3 / DC-5 at 440 V DC | 35 A |
| Maximum DC application voltage | up to 1000 V DC |
| Coil technology | Electronic wide-range DC coil interface |
| Surge suppression | Built in |
| Connection | Ring tongue ferrule compatible |
| Shock and vibration standard | IEC 61373 Category 1 Class B |
| Fire and smoke standard | EN 45545 HL2 / HL3 |
| Operating temperature | -40 to +70 °C |
| Width | approx. 70 mm |
| Height | approx. 118 mm |
| Depth | approx. 116 mm |
| Weight | approx. 1.15 kg |
| Product group | Contactors AF Small |
Frequently Asked Questions
What is the ABB GAF75-10-00RT used for?
The ABB GAF75-10-00RT is a 1-pole DC contactor primarily designed for controlling DC motors and resistive or slightly inductive loads in railway rolling stock and other demanding DC applications.
What control voltage does the GAF75-10-00RT require?
ABB order code 1SBL417028R7200 has a wide-range electronic control circuit rated for 20–60 V DC.
What is the DC-1 current rating of the GAF75-10-00RT?
The contactor has an IEC rated operational current of 100 A DC-1 at 440 V DC at ambient temperatures up to 55 °C.
Why does the GAF75-10-00RT use permanent magnets?
Permanent magnets in the main-pole arc chute help control and extinguish the electrical arc generated when interrupting DC loads, making correct connection polarity important.
Is the GAF75-10-00RT designed for railway applications?
Yes. It is designed for rolling-stock applications and provides shock and vibration performance to IEC 61373 Category 1 Class B together with EN 45545 HL2 and HL3 fire and smoke compliance.
Trusted ABB DC Control for Rolling Stock
ABB GAF contactors combine specialised DC arc interruption, wide-range electronic coil control and railway-qualified construction for dependable switching in rolling-stock and demanding industrial DC systems.
