Why Choose the ABB E290-16-20/48 Latching Relay?
The ABB E290-16-20/48 is a compact and reliable electromechanical latching relay designed for impulse-controlled switching in lighting, building control and electrical distribution applications. As part of the ABB E290 latching relay series, it combines a 16 A rated switching current with two normally open contacts and a 48 V AC / 24 V DC control coil.
Unlike a conventional monostable relay, the E290 changes its mechanically latched contact position each time a short electrical impulse is applied to the coil. The contacts remain in their selected position without continuous coil energisation until the next control pulse is received, enabling simple and energy-efficient control of electrical loads from multiple push-buttons.
With a 16 A rated current, 250 V AC rated operating voltage and 48 V AC / 24 V DC control voltage, the E290-16-20/48 provides two normally open switching contacts in a compact 18 mm DIN rail module. Its front operating lever permits manual actuation while also providing a clear indication of the contact state.
Key Advantages
- Reliable electromechanical latching relay for impulse-controlled switching.
- 16 A rated switching current for electrical load control.
- Two normally open (2NO) contacts for simultaneous switching.
- 48 V AC / 24 V DC control voltage for AC or DC control circuits.
- Mechanically retains its contact position without continuous coil energisation.
- Compact 18 mm DIN rail module for space-efficient installation.
Key Features
- ABB E290 latching relay series.
- 16 A rated current.
- 250 V AC rated operating voltage.
- 2NO normally open contact configuration.
- 48 V AC / 24 V DC control voltage.
- 50 Hz rated frequency for AC control operation.
- Front lever for manual operation and contact-position indication.
- DIN rail mounting with screw-terminal connections.
Efficient Impulse Switching for Electrical Installations
Latching relays such as the ABB E290 switch their contacts whenever an electrical impulse is applied to the control coil. The internal mechanical latching mechanism holds the selected contact position after the pulse ends, eliminating the need for continuous coil energisation and retaining the switching state until another impulse is received.
This operating principle makes the E290 series particularly suitable for lighting systems controlled from several locations. Normally open push-buttons can send control impulses from different points, while the centrally installed relay performs the actual load switching within the electrical distribution board.
Typical Applications
- Lighting circuits controlled from multiple locations.
- Residential and commercial building installations.
- Factory premises and industrial plants.
- Electrical distribution boards.
- Impulse push-button control circuits.
- DIN rail mounted automation and switching systems.
