ABB 1SBL296261R2100 AF38ZB-40-00-21 is a railway-qualified 4-pole contactor rated up to 55 A AC-1 at 690 V, with a wide-range 24–60 V AC or 20–60 V DC electronic control coil.
£274.88
The ABB 1SBL296261R2100, model AF38ZB-40-00-21, is a compact and energy-efficient 4-pole AC/DC operated contactor developed for demanding industrial and railway rolling stock applications. As part of the ABB AF38ZB contactor series, it combines four normally open main contacts with ABB's electronic coil technology to provide dependable power switching across a wide control voltage range.
The AF38ZB range is engineered to meet demanding rolling stock requirements, including resistance to shock and vibration and enhanced fire and smoke performance. Its compact 45 mm width supports space-efficient side-by-side installation, while the electronic coil interface manages substantial control voltage variations and helps reduce energy consumption during operation.
With a rated operational current of 55 A at 690 V AC under AC-1 at 40 °C, the AF38ZB-40-00-21 is designed primarily for switching non-inductive or slightly inductive loads and general power circuits. It can also control motors up to 11 kW at 400 V AC under AC-3, while its wide-range coil accepts 24–60 V AC at 50/60 Hz or 20–60 V DC.
ABB AF38ZB contactors are designed for installations where reliable electrical switching must be maintained despite challenging environmental and supply conditions. Their electronic coil interface handles substantial DC voltage fluctuations, including control voltages commonly supplied by railway batteries, while also accepting sinusoidal AC control supplies within the specified operating range.
The AF38ZB-40-00-21 combines this flexible coil technology with a compact four-pole configuration, integrated surge protection and railway-qualified construction. Its resistance to shock and vibration, wide operating temperature range and enhanced fire and smoke performance make it particularly suitable for electrical equipment installed aboard railway rolling stock as well as demanding industrial systems.
| Manufacturer | ABB |
|---|---|
| Series | AF38ZB |
| Model | AF38ZB-40-00-21 |
| Product ID | 1SBL296261R2100 |
| EAN | 3471523124714 |
| Product type | 4-pole AC/DC contactor |
| Main contacts | 4 NO |
| Auxiliary contacts fitted | 0 NO + 0 NC |
| Rated motor power (AC-3, 400 V) | 11 kW |
| Rated operational current (AC-3, 380–400 V, 60 °C) | 22 A |
| Rated operational current (AC-1, 690 V, 40 °C) | 55 A |
| Rated operational current (AC-1, 690 V, 60 °C) | 45 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 690 V |
| Rated impulse withstand voltage | 6 kV |
| Control voltage (AC) | 24–60 V AC, 50 / 60 Hz |
| Control voltage (DC) | 20–60 V DC |
| Coil type | Electronic AC/DC coil |
| Terminal type | Screw terminals |
| Protection rating | IP20 main and coil terminals |
| Maximum operating altitude | 3000 m |
| Ambient operating temperature | -40 to +70 °C |
| Dimensions (H × W × D) | 86 × 45 × 101 mm |
| Weight | approx. 0.41 kg |
| Railway standards | IEC 60077-1/-2, applicable EN 50155 requirements and IEC 61373 Category 1 Class B |
| Fire and smoke performance | EN 45545-2 HL2 / HL3 in group mounting |
The ABB 1SBL296261R2100 is a 4-pole contactor designed primarily for switching power circuits and non-inductive or slightly inductive loads in railway rolling stock and demanding industrial applications.
The AF38ZB-40-00-21 has four normally open main contacts, making it suitable for applications requiring simultaneous switching across four poles.
The contactor accepts a wide control voltage range of 24–60 V AC at 50/60 Hz or 20–60 V DC.
The AF38ZB-40-00-21 has a rated operational current of 55 A at 690 V AC under AC-1 at an ambient temperature of 40 °C.
Yes. The AF38ZB series is specifically designed for railway rolling stock applications, with shock and vibration resistance to IEC 61373 Category 1 Class B and fire and smoke performance complying with EN 45545-2 HL2 and HL3 requirements in group mounting.
ABB AF38ZB contactors combine railway-qualified construction, wide-range electronic coil technology and compact four-pole switching to provide dependable control of electrical loads in rolling stock and demanding industrial installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...