Why Choose the ABB E290-16-20/24 Latching Relay?
The ABB E290-16-20/24 is a compact and reliable electromechanical latching relay designed for energy-efficient switching of lighting and other compatible electrical loads from multiple control points. As part of the ABB E290 latching relay series, it combines a 16 A switching rating with two normally open contacts and a 24 V AC / 12 V DC control coil.
Unlike a conventional monostable relay, the E290 uses an impulse-operated mechanical latching mechanism. Each brief control pulse changes the contact state, after which the contacts remain mechanically latched without continuous coil energisation until the next impulse is received. This operating principle provides efficient switching and makes the relay particularly suitable for lighting circuits controlled by normally open push-buttons.
With a 16 A rated current, 250 V AC rated operational voltage, 24 V AC / 12 V DC control voltage and 2NO contact configuration, the E290-16-20/24 provides two normally open switching paths for residential, commercial, public-building and industrial installations. Its compact 18 mm DIN rail format enables straightforward integration into modular distribution boards and control panels.
Key Advantages
- Energy-efficient electromechanical latching relay operated by brief control impulses.
- 16 A rated current for switching compatible electrical loads.
- Two normally open (2NO) contacts provide two switching paths.
- 24 V AC / 12 V DC control coil supports compatible AC and DC control circuits.
- Mechanical latching retains the contact state without continuous coil energisation.
- Front operating lever enables manual operation and indicates the contact state.
- Compact 18 mm DIN rail format conserves distribution-board space.
Key Features
- ABB E290 electromechanical latching relay series.
- 16 A rated current.
- 2NO main contact configuration.
- 250 V AC rated operational voltage.
- 24 V AC / 12 V DC control voltage.
- 50 Hz rated frequency.
- 0.64 W power loss.
- 4 kV rated impulse withstand voltage.
- Minimum control impulse duration of 50 ms.
- Response time of less than 3 ms.
- DIN rail mounting with an 18 mm module width.
Energy-Efficient Impulse Switching for Lighting Control
Latching relays such as the ABB E290-16-20/24 change their contact state each time a short electrical impulse is applied to the control coil. The internal mechanical mechanism then holds the contacts securely in their new position without continuous coil energisation until the next control impulse is received.
This switching principle is particularly useful where lighting needs to be controlled from multiple locations using normally open push-buttons. The E290-16-20/24 combines two normally open contacts, a 16 A rating and 24 V AC / 12 V DC control compatibility, making it a practical solution for residential, commercial, public-building and industrial electrical installations.
Typical Applications
- Multi-point lighting control systems.
- Staircase and corridor lighting.
- Residential electrical installations.
- Commercial and public building lighting.
- Factory and industrial lighting systems.
- DIN rail distribution boards and control panels.
