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CNB2020024 Lovato LATCHING RELAY 1M 20A AC1 2P 24V
Lovato CNB2020024 is a compact two-pole latching relay with 2NO contacts, a 20 A conventional thermal current rating and 24 V AC control supply for bistable switching in modular electrical systems.
£38.00
Why Choose the Lovato CNB2020024 Latching Relay?
The Lovato CNB2020024 is a compact and reliable two-pole latching relay designed for bistable switching of electrical loads using momentary control commands. As part of the Lovato CNB modular latching relay series, it is suited to electrical distribution, lighting control, building automation and industrial control panels where the switching state needs to be retained after the control pulse.
The CNB2020024 features two normally open (2NO) contacts and an IEC conventional free-air thermal current of 20 A. Its 24 V AC auxiliary supply makes it suitable for low-voltage control circuits, while integrated manual control provides convenient local operation during commissioning, testing and normal system use.
Occupying only one DIN module, the CNB2020024 combines compact installation with a mechanical endurance of up to 3,000,000 cycles. Standard 35 mm DIN rail mounting, IP20 frontal protection and power terminals accepting conductors up to 10 mm² make it a practical choice for professional modular electrical installations.
Key Advantages
- Compact bistable latching relay for modular electrical installations.
- 20 A AC-1 conventional thermal current for suitable electrical loads.
- Two normally open contacts provide simultaneous two-pole switching.
- 24 V AC control supply for low-voltage control systems.
- Integrated manual control enables convenient local switching.
- Single-module DIN rail construction minimises space requirements inside electrical panels.
Key Features
- Lovato CNB modular latching relay series.
- 20 A conventional free-air thermal current Ith.
- Two-pole, 2NO contact configuration.
- 24 V AC auxiliary rated supply voltage.
- 440 V rated insulation voltage Ui.
- 4 kV rated impulse withstand voltage Uimp.
- Integrated manual control.
- One DIN module construction.
- 35 mm DIN rail mounting.
- IP20 frontal protection rating.
- Mechanical endurance of up to 3,000,000 cycles.
- Power terminals accept conductors from 1–10 mm².
Reliable Latching Control for Electrical Switching
Latching relays such as the Lovato CNB2020024 change and retain their switching state in response to control pulses. This bistable operation allows the contacts to remain in their selected state without requiring the control coil to remain continuously energised, making latching relays particularly useful for lighting and remote switching systems.
The CNB2020024 combines a 24 V AC control circuit with two normally open contacts and a 20 A conventional thermal current rating. Its compact one-module construction, manual control and long mechanical endurance make it well suited to building automation, electrical distribution and industrial control applications.
Typical Applications
- Lighting control and switching circuits.
- Building automation and electrical distribution systems.
- Industrial electrical control panels.
- Remote switching from momentary push buttons.
- Modular control and distribution boards.
- OEM electrical equipment and panel-building applications.
Technical Specifications
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| Poles | 2-pole | |
|---|---|---|
| Device Type | Accessory | |
| Manufacturer | Lovato Electric | |
| Series | CNB Latching Relays | |
| Model | CNB2020024 | |
| Product type | Latching relay | |
| Operating voltage type | AC | |
| Number of poles | 2 | |
| Contact configuration | 2NO | |
| Number of DIN modules | 1 | |
| IEC conventional free-air thermal current Ith | 20 A | |
| Auxiliary rated supply voltage Us | 24 V AC | |
| Rated insulation voltage Ui | 440 V | |
| Rated impulse withstand voltage Uimp | 4 kV | |
| Minimum switching capacity | ≥10 V, ≥100 mA | |
| Power dissipation per pole at Ith | 1.7 W | |
| Manual control | Yes | |
| Pick-up operating voltage | 85–110% Us | |
| Closing time for NO contacts | 5–20 ms | |
| Opening time for NO contacts | 5–20 ms | |
| Mechanical life | 3,000,000 cycles | |
| Electrical life AC-1 | 200,000 cycles | |
| Electrical life AC-3 | 300,000 cycles | |
| Operating temperature | -5 to +55 °C | |
| Storage temperature | -30 to +80 °C | |
| Maximum altitude | 2000 m | |
| Mounting | 35 mm DIN rail | |
| Maximum coil terminal tightening torque | 0.6 Nm | |
| Maximum power terminal tightening torque | 1.2 Nm | |
| Coil conductor section | 1–2.5 mm² | |
| Power conductor section | 1–10 mm² | |
| Terminal tool | PZ2 | |
| Frontal protection rating | IP20 | |
| Pollution degree | 3 | |
| Weight | approx. 135 g | |
| Compliance | IEC/EN/BS 60669-1, IEC/EN/BS 60669-2-2, IEC/EN/BS 60947-1, IEC/EN/BS 60947-4-1, IEC/EN/BS 60947-5-1, IEC/EN/BS 61095 | |
| EAN13 | 8013975242773 | |
| HS code | 85365080 |
Frequently Asked Questions
What is the Lovato CNB2020024 used for?
The CNB2020024 is a latching relay used for bistable switching of electrical loads from control pulses, making it suitable for lighting, building automation, distribution and industrial control applications.
What is the current rating of the CNB2020024?
The Lovato CNB2020024 has an IEC conventional free-air thermal current Ith of 20 A.
What control voltage does the CNB2020024 require?
The CNB2020024 uses a 24 V AC auxiliary rated supply voltage for its control circuit.
What contact configuration does the CNB2020024 have?
The CNB2020024 is a two-pole latching relay with two normally open (2NO) contacts.
How is the Lovato CNB2020024 installed?
The CNB2020024 occupies one DIN module and mounts onto a standard 35 mm DIN rail inside a suitable electrical enclosure.
Trusted by Electrical Engineers Worldwide
Lovato Electric CNB latching relays provide compact and dependable bistable switching for lighting control, building automation, electrical distribution, industrial panels and professional OEM electrical systems.
