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C4HQ11 IMO Auxiliary Contact Block 1 NO 1NC Top Mounting
IMO C4HQ11 is a top-mounted 1NO + 1NC auxiliary contact block for C4/32, C4/63 and C4/100 motor circuit breakers, providing additional contacts for industrial control, signalling and monitoring circuits.
£7.87
Why Choose the IMO C4HQ11 Auxiliary Contact Block?
The IMO C4HQ11 is a top-mounted auxiliary contact block designed for IMO C4 motor circuit breakers. Featuring 1 normally open (1NO) and 1 normally closed (1NC) contact, it provides auxiliary switching contacts for signalling, monitoring and control functions within industrial motor protection systems.
Designed specifically for the IMO C4/32, C4/63 and C4/100 motor circuit breaker ranges, the C4HQ11 mounts directly to the top of the compatible breaker. IMO specifies a maximum of one top-mounted auxiliary contact block per circuit breaker, providing a compact way to add status contacts without requiring a separate control device.
The C4HQ11 auxiliary contacts are rated at 3 A at 24 V AC under AC-15, 2 A at 240 V AC under AC-15 and 5 A at 240 V AC under AC-1. This makes the contact block suitable for integration into control and indication circuits associated with machinery, motor starters and industrial automation equipment.
Key Advantages
- Provides 1NO + 1NC auxiliary contacts for flexible control and signalling.
- Compatible with IMO C4/32, C4/63 and C4/100 motor circuit breakers.
- Top-mounted design supports compact motor control assemblies.
- Allows circuit breaker status to be incorporated into external control or indication circuits.
- Defined AC-15 and AC-1 operational current ratings simplify control-circuit specification.
- Purpose-designed as part of the coordinated IMO C4 accessory system.
Key Features
- Top-mounted auxiliary contact block.
- 1 normally open (1NO) contact.
- 1 normally closed (1NC) contact.
- Maximum one C4HQ auxiliary block per circuit breaker.
- Compatible with C4/32 motor circuit breakers.
- Compatible with C4/63 motor circuit breakers.
- Compatible with C4/100 motor circuit breakers.
- Suitable for auxiliary signalling, monitoring and control circuits.
Auxiliary Status Signalling for Motor Protection Systems
Auxiliary contacts allow the switching state of a motor circuit breaker to be incorporated into a separate control circuit. The combination of one normally open and one normally closed contact gives control-system designers flexibility when implementing status indication, interlocking or other auxiliary functions associated with a motor protection device.
Because the IMO C4HQ11 mounts directly to the top of compatible C4 motor circuit breakers, it provides these additional contacts without requiring a separate standalone switching component. Its defined AC-15 and AC-1 ratings make it suitable for appropriately rated industrial control circuits and coordinated motor starter assemblies.
Typical Applications
- Motor circuit breaker status indication.
- Industrial motor starter assemblies.
- Electrical interlocking circuits.
- Machinery control panels.
- PLC and automation signalling circuits.
- Pump, fan and conveyor control systems.
Technical Specifications
| Manufacturer | IMO Precision Controls |
|---|---|
| Series | C4 Motor Circuit Breaker Accessories |
| Model | C4HQ11 |
| Product type | Auxiliary contact block |
| Mounting position | Top mounted |
| Contact configuration | 1NO + 1NC |
| Normally open contacts | 1 |
| Normally closed contacts | 1 |
| Rated operational current, AC-15 at 24 V | 3 A |
| Rated operational current, AC-15 at 240 V | 2 A |
| Rated operational current, AC-1 at 240 V | 5 A |
| For use with | IMO C4/32, C4/63 and C4/100 motor circuit breakers |
| Maximum quantity | 1 top-mounted auxiliary contact block per circuit breaker |
Frequently Asked Questions
What is the IMO C4HQ11 used for?
The C4HQ11 is a top-mounted auxiliary contact block that adds one normally open and one normally closed contact to a compatible IMO C4 motor circuit breaker for auxiliary control, signalling and monitoring functions.
What contacts does the IMO C4HQ11 provide?
The C4HQ11 provides 1 normally open (1NO) and 1 normally closed (1NC) auxiliary contact.
Which motor circuit breakers are compatible with the C4HQ11?
The IMO C4HQ11 is designed for use with C4/32, C4/63 and C4/100 motor circuit breakers.
Where is the C4HQ11 mounted?
The C4HQ11 is a top-mounted auxiliary contact block. IMO specifies a maximum of one top-mounted auxiliary contact block per compatible motor circuit breaker.
What are the contact ratings of the IMO C4HQ11?
The C4HQ11 is rated at 3 A at 24 V AC under AC-15, 2 A at 240 V AC under AC-15 and 5 A at 240 V AC under AC-1.
Flexible Motor Control Accessories from IMO
IMO C4 auxiliary contact blocks extend compatible motor circuit breakers with additional signalling and control contacts, helping panel builders integrate motor protection devices into coordinated industrial control and automation systems.
