ABB TEF4-ON frontal electronic timer relay with ON-delay function, adjustable timing ranges up to 100 seconds and compatibility with ABB AF, AFC, NF and NFC contactors.
£90.54
The ABB 1SBN020112R1000, also known as the TEF4-ON, is a compact front-mounted electronic ON-delay timer designed for use with ABB AF series contactors and NF contactor relays. It provides accurate and repeatable timing control for industrial motor starters, automation systems and control panels, helping simplify machine sequencing and control logic.
Engineered for seamless integration, the TEF4-ON plugs directly onto compatible contactors without requiring additional control wiring. Its integrated surge protection, wide 24-240 V AC/DC control voltage range and adjustable timing functions make it an ideal solution for OEM machinery, industrial automation and motor control applications.
With selectable timing ranges from 0.1 to 100 seconds, screw terminals and a compact front-mounted design, the ABB 1SBN020112R1000 provides reliable delayed switching while reducing installation time and panel space requirements.
Electronic timers provide precise delayed switching functions that improve machine sequencing, motor starting and automation processes. The ABB TEF4-ON timer integrates directly with compatible contactors, offering a compact and reliable timing solution without increasing control panel complexity.
Its wide operating voltage range and selectable timing intervals make it suitable for a broad range of industrial applications, while the integrated surge protection helps extend contactor service life and improve system reliability.
| Current | 3 A |
|---|---|
| IP Rating | IP20 |
| Series | TEF4 |
| Part number | 1SBN020112R1000 |
| Product type | Frontal electronic timer |
| Timer function | ON-delay |
| Timing range | 0.1 to 100 seconds |
| Timing range selection | 3 selectable ranges |
| Auxiliary contacts | 1 NO + 1 NC |
| Number of poles | 2P |
| Rated operational voltage | 24 V DC / 240 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated operational current AC-15 | 3 A at 24/127 V AC, 1.5 A at 220/240 V AC |
| Rated operational current DC-13 | 1 A at 24 V DC |
| Rated insulation voltage | 400 V IEC, 300 V UL/CSA |
| Impulse withstand voltage | 4 kV |
| Conventional free-air thermal current | 5 A |
| Maximum electrical switching frequency | 1200 cycles/hour AC-15 |
| Maximum mechanical switching frequency | 3600 cycles/hour |
| Terminal type | Screw terminals |
| Protection rating | IP20 |
| Compatible contactors | ABB AF09...AF96, AFC09...AFC96, NF and NFC contactor relays |
| Operating temperature | approx. -25 °C to +70 °C |
| Standards | IEC/EN 60947-5-1, UL 508, CSA C22.2 |
| Dimensions (W × H × D) | approx. 43 × 41.6 × 67.7 mm |
| Weight | approx. 0.065 kg |
| EAN | 3471523130630 |
It provides an adjustable ON-delay timing function for ABB AF contactors and NF contactor relays in industrial automation and motor control systems.
The timer offers adjustable delays from 0.1 to 100 seconds using three selectable timing ranges.
The TEF4-ON operates on a wide 24-240 V AC/DC control voltage range.
It is designed for ABB AF09 to AF96 contactors and compatible NF contactor relays.
Yes. The timer incorporates an integrated varistor that helps protect the contactor coil from voltage surges.
ABB TEF4 electronic timers are trusted by panel builders, machine manufacturers and automation engineers for delivering accurate timing control, dependable operation and straightforward integration into industrial motor control systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...