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CNB2020012 Lovato LATCHING RELAY 1M 20A AC1 2P 12V
Lovato CNB2020012 is a compact two-pole latching relay with 2NO contacts, a 20 A conventional thermal current rating and 12 V AC control supply for bistable switching in modular electrical systems.
£38.00
Why Choose the Lovato CNB2020012 Latching Relay?
The Lovato CNB2020012 is a compact two-pole latching relay designed for switching electrical loads from momentary control commands. As part of the Lovato CNB modular latching relay series, it provides a practical bistable switching solution for electrical distribution, building control and industrial panel applications where the contact state must be retained after the control pulse.
The CNB2020012 provides two normally open (2NO) contacts with a conventional free-air thermal current of 20 A and uses a 12 V AC control supply. Manual control is incorporated for convenient local operation, while the latching mechanism avoids the need for the coil to remain continuously energised to maintain the selected switching state.
Occupying only one DIN module, the CNB2020012 provides high switching capability in a compact modular format. It mounts directly onto a standard 35 mm DIN rail and combines an IP20 frontal protection rating with a mechanical life of up to 3,000,000 cycles for dependable service in suitable electrical enclosures.
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.
- 12 V AC control supply for low-voltage control circuits.
- Manual control enables convenient local switching and operation.
- Single-module DIN rail design 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.
- 12 V AC auxiliary rated supply voltage.
- 440 V rated insulation voltage Ui.
- 4 kV rated impulse withstand voltage Uimp.
- Integrated manual control.
- Compact one DIN module construction.
- 35 mm DIN rail mounting.
- IP20 frontal protection.
- 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 CNB2020012 change and retain their switching state in response to control pulses. Unlike conventional continuously energised relays, the latching mechanism allows the selected contact state to remain mechanically maintained after the control command, helping reduce continuous coil energisation in suitable control applications.
The CNB2020012 combines a 12 V AC control circuit with two normally open switching contacts and a 20 A conventional thermal current rating. Its one-module DIN rail construction and manual control make it particularly suitable for compact distribution boards, building control equipment and industrial electrical panels requiring dependable bistable switching.
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 | |
| Model | CNB2020012 | |
| Product type | Latching relay | |
| Operating voltage type | AC | |
| Number of poles | 2 | |
| Contact configuration | 2NO | |
| Number of DIN modules | 1 | |
| Conventional free-air thermal current Ith | 20 A | |
| Auxiliary rated supply voltage Us | 12 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 | |
| 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 | 135 g | |
| EAN13 | 8013975242827 | |
| HS code | 85365080 |
Frequently Asked Questions
What is the Lovato CNB2020012 used for?
The CNB2020012 is a latching relay used for bistable switching of electrical loads from control pulses, making it suitable for lighting, building control, distribution and industrial panel applications.
What is the current rating of the CNB2020012?
The Lovato CNB2020012 has an IEC conventional free-air thermal current Ith of 20 A.
What control voltage does the CNB2020012 require?
The CNB2020012 uses a 12 V AC auxiliary rated supply voltage for its control circuit.
What contact configuration does the CNB2020012 have?
The CNB2020012 is a two-pole relay with two normally open (2NO) contacts.
How is the Lovato CNB2020012 installed?
The CNB2020012 occupies one DIN module and is designed for installation on 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 electrical distribution, building control, industrial panels and professional OEM electrical systems.
