Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
KBN4A12 Lovato “””FINEC.CHIAVE “”””T”””” ANG.1NO+2NC LEN.SOVR”
Lovato KBN4A12 is an IP65 key-operated industrial limit switch with an angular T-shaped actuator key, 1NO + 2NC slow-action overlapping contacts and positive opening functionality for machine guard monitoring.
£49.10
Why Choose the Lovato KBN4A12 Key-Operated Safety Limit Switch?
The Lovato KBN4A12 is a key-operated safety limit switch with an angular T-shaped actuator key, designed for monitoring movable guards, doors and access points on industrial machinery. Its compact plastic housing follows the EN 50047 dimensional format, making it suitable for integration into machine safety and position-monitoring systems.
The KBN4A12 features 1NO + 2NC slow-action overlapping contacts, providing three contacts for machine control, interlocking and monitoring functions. Positive opening functionality provides dependable mechanical opening of the relevant normally closed contacts when the actuator key is withdrawn from the switch.
With an IP65 protection rating, operating temperature range from -25 °C to +70 °C and compact 30 × 30 × 93 mm dimensions, the KBN4A12 is designed for dependable industrial service. Its angular T-shaped key makes it particularly useful where the mechanical arrangement of the guard requires an angled actuator approach.
Key Advantages
- Key-operated design for monitoring movable machine guards and access points.
- Supplied with an angular T-shaped actuator key.
- 1NO + 2NC contacts provide multiple switching functions from one device.
- Slow-action overlapping switching provides defined contact operation.
- Positive opening functionality supports dependable opening of the relevant NC contacts.
- IP65 protection for industrial machinery environments.
- Compact EN 50047-format housing simplifies machine integration.
Key Features
- Lovato K series key-operated limit switch.
- Angular T-shaped actuator key.
- 1 normally open + 2 normally closed contacts.
- Slow-action overlapping contact operation.
- Positive / forced opening functionality.
- Durable plastic housing.
- Dimensions according to EN 50047.
- IP65 degree of protection.
- Metric cable entry from the bottom of the housing.
- Operating temperature range from -25 °C to +70 °C.
- Compact 30 × 30 × 93 mm housing.
- Suitable for industrial machine guarding and position-monitoring applications.
Dependable Monitoring of Machine Guards and Access Points
Key-operated limit switches provide mechanical position feedback by using a separate actuator key attached to the movable part of a machine guard. When the guard is closed, the actuator enters the switch head; when the guard opens, the key is withdrawn and the switch contacts change state, allowing the machine control system to detect the guard position.
The Lovato KBN4A12 combines an angular T-shaped actuator with 1NO + 2NC slow-action overlapping contacts and positive opening functionality. The angled actuator arrangement provides additional installation flexibility where guard geometry makes a straight actuator approach impractical.
Typical Applications
- Machine guard position monitoring.
- Safety door and access-panel detection.
- Industrial machinery interlocking systems.
- Packaging and processing machinery.
- Automated production and assembly equipment.
- Conveyor and material handling systems.
- Machine tools and manufacturing equipment.
- OEM machinery and industrial automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Safety key switch | |
|---|---|---|
| Auxiliary Contacts | 2 NC | |
| IP Rating | IP65 | |
| Manufacturer | Lovato Electric | |
| Series | K / KBN | |
| Model | KBN4A12 | |
| Product type | Key-operated limit switch | |
| Operating principle | Separate key actuator | |
| Actuator | Angular T-shaped key | |
| Housing material | Plastic | |
| Housing construction | Cuboid | |
| Dimensional standard | EN 50047 | |
| Contact configuration | 1NO + 2NC | |
| Switching function | Slow action with overlapping contacts | |
| Positive / forced opening | Yes | |
| Rated operational current AC-15 at 24 V | 10 A | |
| Rated operational current AC-15 at 125 V | 6 A | |
| Rated operational current AC-15 at 230 V | 3 A | |
| Protection rating | IP65 | |
| Electrical connection | Metric cable entry | |
| Cable entry position | Bottom | |
| Operating temperature | -25 °C to +70 °C | |
| Width | 30 mm | |
| Depth | 30 mm | |
| Height | 93 mm | |
| Weight | approx. 90 g | |
| EAN | 8013975151365 | |
| HS code | 85365080 | |
| Country of origin | Italy |
Frequently Asked Questions
What is the Lovato KBN4A12 used for?
The KBN4A12 is a key-operated limit switch used to monitor movable machine guards, doors, covers and other access points on industrial machinery.
What contacts does the Lovato KBN4A12 have?
The KBN4A12 has 1NO + 2NC slow-action overlapping contacts, providing one normally open and two normally closed contacts.
What type of actuator does the KBN4A12 use?
The KBN4A12 uses an angular T-shaped actuator key. The angled arrangement provides installation flexibility where the geometry of the movable guard requires an angular actuator approach.
Does the Lovato KBN4A12 have positive opening contacts?
Yes. The KBN4A12 incorporates positive / forced opening functionality, providing dependable mechanical opening of the relevant normally closed contacts when operated.
What protection rating does the Lovato KBN4A12 have?
The KBN4A12 has an IP65 protection rating, providing protection against dust ingress and water jets for industrial machinery applications.
Trusted Machine Control from Lovato Electric
Lovato Electric K series key-operated limit switches provide dependable electromechanical monitoring for machine guards and access points, combining compact industrial construction, positive opening contacts and flexible actuator arrangements for machinery and automation applications.
