ABB - Electrification TEF4-OFF - TEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independently of the control system. The time delay ranges are selected by a switch and the time delay can be adjusted by means of a rotary switch. The timing function is activated by closing or opening the device on which the timer is mounted. The OFF-delay version operates without additional control supply.
ABB - Electrification

TEF4-OFF

Contact for Pricing

Overview

The ABB TEF4-OFF Electronic Timer (SKU: TEF4-OFF) from ABB Electrification is a versatile component designed for precise OFF-delay timing functions in industrial control systems. This timer operates independently of the main control system, offering reliable performance for applications requiring timed de-energization. It is specifically designed for front-mounting and direct locking onto ABB AF contactors (AF09 to AF96) and NF contactor relays, providing a compact and integrated solution within electrical cabinets. The TEF4-OFF features three distinct time delay ranges: 0.1–1 second, 1–10 seconds, and 10–100 seconds. These ranges are selectable via a dedicated switch, with fine-tuning of the delay period achieved through an integrated rotary switch. The timing function is initiated by either the closing or opening of the device to which the timer is mounted, offering operational flexibility. A key advantage of the TEF4-OFF is its operation without an additional control supply; it draws power directly from the A1-A2 coil terminals of the contactor or contactor relay. This simplifies wiring and reduces potential points of failure. For enhanced durability and protection in demanding industrial environments, an integrated varistor is included to safeguard against voltage surges within the contactor coil circuit. The timer is compatible with a wide control voltage range of 24–240 V AC/DC. Technical specifications include a rated insulation voltage (Ui) of 400V, rated impulse withstand voltage (Uimp) of 4 kV, and pollution degree 3. The rated operational voltage (Ue) is a maximum of 240 V AC / 24 V DC, with a rated frequency of 50/60 Hz. It has a conventional thermal current (Ith) of 5 A at ≤ 40 °C. For AC-15 operational current, it is rated at 3 A for 24-127 V (50/60 Hz) and 1.5 A for 220-240 V (50/60 Hz). DC-13 operational current is 1 A / 24 W at 24 V DC. Short-circuit protection is recommended with a gG type fuse of 10 A. The TEF4-OFF also features a mechanical indicator to display the status of the contactor. Certified according to IEC/EN 60947-5-1, this timer ensures dependable operation in motor control and protection circuits.
  • OFF-delay electronic timer with adjustable time delays up to 100 seconds.
  • Three selectable time delay ranges: 0.1–1s, 1–10s, and 10–100s.
  • Operates independently of the control system and without additional control supply.
  • Front-mounted and locks directly onto ABB AF contactors and NF contactor relays.
  • Integrated varistor for protection against voltage surges in the contactor coil circuit.
  • Wide control voltage range of 24-240 V AC/DC.
  • Front-mounted design that locks onto ABB contactors and contactor relays.
  • Includes a mechanical indicator to display the state of the contactor.

Specifications

Application
Mainly used for controlling 3-phase motors and generally for controlling power circuits up to 690 V AC and 220 V DC. The contactors can also be used for many other applications such as bypass, capacitor switching, lighting, DC power circuits.
Current Rating
5 A
Frequency
50/60 Hz
Mounting Type
Front-mounted, locks onto contactors
Mounting Type
Front-mounting, direct locking onto ABB AF contactors (AF09 to AF96) and NF contactor relays
Series
TEF4
Size
82x110x108mm
Special Features
TEF4 frontal electronic timers are used for realizing timing function and are available in ON-delay and OFF-delay versions.Compact solution in cabinet compared to separate timersTEF4 electronic timers are front-mounted and locked on AF contactors or NF contactor relays.A mechanical indicator allows to show the state of the contactor.Safe and cost-reduced wiring. TEF4 electronic timers are supplied by a direct plug-in parallel connection to the coil terminals A1 - A2 of the contactor or contactor relay. A varistor is integrated on the timer to offer a built-in protection against surges in the contactor coil.Available for a wide control voltage range 24...240 V AC/DCTEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independently of the control system. The time delay ranges are selected by a switch and the time delay can be adjusted by means of a rotary switch. The timing function is activated by closing or opening the device on which the timer is mounted. The OFF-delay version operates without additional control supply.
Standard
RoHs, CSA, cUL, CE, GOST
Type
Contactors
Voltage Rating
24-240 V AC/DC
Package Dimensions (L x W x H)
2.205 IN x 3.228 IN x 2.008 IN
Package Dimensions (L x W x H)
5.6007 cm x 8.1991 cm x 5.1003 cm
Package Weight (Imperial)
0.180 L
Package Weight (Metric)
0.082 kg
SPDT MULTIFUNCTION TIMER

DMB51CM24

SPDT MULTIFUNCTION TIMER
TEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independently of the control system. The time delay ranges are selected by a switch and the time delay can be adjusted by means of a rotary switch. The timing function is activated by closing or opening the device on which the timer is mounted. The OFF-delay version operates without additional control supply.

TEF4-ON

TEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independently of the control system. The time delay ranges are selected by a switch and the time delay can be adjusted by means of a rotary switch. The timing function is activated by closing or opening the device on which the timer is mounted. The OFF-delay version operates without additional control supply.
TurnLock LED Electronic 105-305V IR

5237-UL

TurnLock LED Electronic 105-305V IR

Frequently Asked Questions about ABB - Electrification

What industries and applications are Jokab Safety products used for?

Jokab Safety products are specifically designed for machine safety applications across multiple critical industrial sectors, including Food and Beverage, Packaging, and Material Handling industries. Their safety solutions cover a wide range of machine safeguarding needs, such as safety light guards, safety controllers, safety relays, safety edges, safety mats, and two-hand control devices that protect personnel and equipment in complex industrial automation environments.

What technical support does Jokab Safety offer?

Jokab Safety offers comprehensive technical support through multiple channels, including a dedicated technical support phone line at (888) 385-1221 (Option 1) and email support at [email protected]. For advanced technical assistance, customers can contact their specialized Jokab Tech Support at (519) 982-0976 or email [email protected]. Additionally, they provide product specialist support through Jeff Leslie, who can be reached at (519) 982-0976, offering in-depth application and technical guidance.

What are the main product lines offered by Jokab Safety?

Jokab Safety offers a comprehensive range of machine safety products including safety light guards (Orion), safety controllers (Pluto), safety relays (Sentry), safety edges, safety contact mats, safety locks (Gkey), and safety sensors with OSSD and DYNlink interfaces. Their product lines are specifically designed for industrial applications in food and beverage, packaging, and material handling industries, providing robust safety solutions for machine guarding and personnel protection.

What are the key features of Jokab Safety products?

Jokab Safety products offer comprehensive industrial safety solutions with key features including: highest safety certification levels (up to PL e/Cat 4), extensive fault detection, multiple safety device types (optical safety devices, pressure sensitive devices, sensors, switches, locks, emergency stops), and innovative DYNlink technology that reduces cable requirements and simplifies installation. Their products are certified, verified, and compatible with major industrial automation systems like B&R, featuring easy M12 connector connections and a wide range of adapters to streamline safety implementation.

What certifications and standards do ABB - Electrification products comply with?

ABB - Electrification products comply with a comprehensive range of international certifications and standards, including UL (United States), CSA (Canada), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia & New Zealand). Our products meet critical international standards such as IEC 60947 series for low-voltage switchgear, functional safety standards EN 61800-5-2 and ISO 13849-1, and marine classification standards from Bureau Veritas, DNV, and Lloyd's Register of Shipping.

What industries and applications are ABB - Electrification products used for?

ABB - Electrification products are engineered for critical applications across multiple industries, including Energy, Oil & Gas, Manufacturing, Power Generation, HVAC, Marine, Food & Beverage, Mining, Pulp & Paper, Water Treatment, and Automotive. Their solutions cover essential electrical infrastructure needs such as switchgear, power distribution systems, circuit protection, digital control technologies, and drive systems designed for high-reliability environments with a strong focus on sustainability, efficiency, and safety.

What technical support does ABB - Electrification offer?

ABB - Electrification offers comprehensive technical support through multiple channels, including a dedicated technical support hotline at 888-385-1221 (Option 1), available 7:00 a.m. - 5:00 p.m. CST, Monday-Friday. Their support services encompass 24/7/365 emergency services, on-site support, remote monitoring and diagnostics, installation and commissioning, equipment assessments, repair coordination, and multi-vendor technical assistance. Customers can also access resources like personnel safety training, disaster recovery support, and service agreements tailored to their specific electrification needs.

What are the main product lines offered by ABB - Electrification?

ABB - Electrification offers a comprehensive range of electrical distribution and protection products, including circuit monitoring systems, panelboards, switchgear, motor control centers, circuit breakers, softstarters, and power distribution solutions. Key product lines span low and medium voltage applications across utilities, commercial, industrial, healthcare, and manufacturing sectors, with specialized offerings like the ReliaGear® panelboards, SMISSLINE TP bus systems, and Ekip UP protection and metering relays.

What are the key features of ABB - Electrification products?

ABB - Electrification products feature advanced integrated design elements that enhance industrial performance and reliability. Key features include harmonics and EMC design, integrated DC choke, removable terminals for fast installation, USB ports for troubleshooting, and integrated Safe Torque Off (STO) functionality. The products deliver superior motor control capabilities, support both induction and permanent magnet motors, and offer robust operational features like side-by-side mounting without derating and operation at temperatures up to 45°C. Additionally, ABB's Electrification solutions emphasize digital innovation, with technologies like Novolink enabling predictive maintenance, enhanced analytics, and seamless system integration.

What communication protocols do ABB - Electrification products support?

ABB - Electrification products support a comprehensive range of industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, DeviceNet, and IEC 61850. These protocols enable flexible connectivity across multiple industrial automation platforms, with support for various network topologies and high-speed data transmission up to 100 Mbps.