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.
LDC5A21-20 IMO Limit Switch, Standard Coiled Spring + Cats Whiskers
IMO LDC5A21-20 heavy-duty metal-body limit switch with a coiled spring and cats whisker actuator, 1NO + 1NC snap-action contacts and a single M20 cable entry for industrial position detection.
£24.64
Why Choose the IMO LDC5A21-20 Heavy-Duty Limit Switch?
The IMO LDC5A21-20 is a robust heavy-duty industrial limit switch designed for reliable position detection and mechanical switching in machinery, automation and industrial control systems. As part of the IMO LD Series, it combines a durable metal body with a coiled spring and cats whisker actuator for dependable operation where flexible, multidirectional mechanical actuation is required.
The LDC5A21-20 uses a C5 snap-action contact block with 1NO + 1NC contacts, providing normally open and normally closed switching functions for control, monitoring and signalling circuits. Its snap-action mechanism provides positive switching when the flexible actuator is displaced by a moving machine component.
A key feature of the LDC5A21-20 is its single M20 cable entry, distinguishing it from the PG13.5-entry LDC5A21 variant. Combined with its metal construction and flexible coiled spring and cats whisker actuator, the switch is well suited to industrial machinery where the direction or exact point of mechanical contact can vary.
Key Advantages
- Heavy-duty industrial limit switch with robust metal body.
- Coiled spring and cats whisker actuator for flexible multidirectional position detection.
- 1NO + 1NC snap-action contacts for control and signalling applications.
- Single M20 cable entry for straightforward industrial wiring installation.
- Flexible actuator accommodates varying approach angles from moving machine components.
- Designed for dependable position sensing in industrial machinery and automation systems.
Key Features
- IMO LD Series heavy-duty limit switch.
- Standard coiled spring and cats whisker actuator.
- C5 1NO + 1NC snap-action contact configuration.
- Heavy-duty metal body construction.
- Single M20 cable entry.
- Maximum operating speed of 1 m/s for the A21 actuator configuration.
- Minimum operating torque of 0.08 Nm for the A21 actuator configuration.
- Flexible multidirectional actuation for variable mechanical contact positions.
Reliable Position Detection for Industrial Machinery
Limit switches such as the IMO LDC5A21-20 provide an electrical switching signal when physical movement of a machine component displaces the actuator. This enables industrial control systems to detect positions, monitor moving equipment, initiate machine sequences and provide interlocking or signalling functions.
The LDC5A21-20's coiled spring and cats whisker actuator is particularly useful where mechanical contact can approach from varying directions or where a rigid plunger or lever actuator would be unsuitable. Its flexible actuator, snap-action contacts and rugged metal body make it a practical solution for repetitive position sensing throughout industrial machinery and automated equipment.
Typical Applications
- Industrial machinery position and movement detection.
- Conveyor and material handling systems.
- Packaging and production machinery.
- Machine tools and automated equipment.
- Mechanical position monitoring and sequencing.
- Industrial control and interlocking systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Limit switch | |
|---|---|---|
| Contacts | 1NO + 1NC | |
| Actuator Type | Spring rod / wobble stick | |
| Housing Material | Metal | |
| Connection | M20 cable entry | |
| Manufacturer | IMO Precision Controls | |
| Series | LD Series | |
| Model | LDC5A21-20 | |
| Product type | Heavy-duty industrial limit switch | |
| Body material | Metal | |
| Actuator type | Coiled spring and cats whisker | |
| Contact block | C5 | |
| Contact configuration | 1NO + 1NC | |
| Contact action | Snap action | |
| Cable entry | 1 × M20 | |
| Maximum operating speed | 1 m/s | |
| Minimum operating torque | 0.08 Nm | |
| Travel diagram group | Group 3 | |
| HS Code | 8536500700 | |
| Country of Manufacture | Italy |
Frequently Asked Questions
What is the IMO LDC5A21-20 used for?
The IMO LDC5A21-20 is used for mechanical position and movement detection in industrial machinery, conveyors, automated equipment and control systems.
What type of actuator does the LDC5A21-20 use?
The LDC5A21-20 uses a coiled spring and cats whisker actuator, providing flexible multidirectional operation where the position or direction of mechanical contact can vary.
What contacts does the IMO LDC5A21-20 have?
The switch uses a C5 snap-action contact block with 1NO + 1NC contacts, providing one normally open and one normally closed contact for industrial control circuits.
What cable entry does the LDC5A21-20 use?
The IMO LDC5A21-20 has a single M20 cable entry for electrical connection.
What is the difference between the IMO LDC5A21 and LDC5A21-20?
Both models use the same coiled spring and cats whisker actuator with 1NO + 1NC snap-action contacts, but the LDC5A21-20 uses an M20 cable entry while the standard LDC5A21 uses a PG13.5 entry.
Trusted Industrial Switching from IMO
IMO LD Series heavy-duty limit switches are designed to provide dependable mechanical position detection for industrial machinery and automation systems, combining robust metal construction with versatile actuator and contact configurations.
