1. Product Description

The CHINT AL-X1 Alarm Auxiliary Contact is an electrical signalling accessory designed for compatible CHINT circuit breakers. It provides an alarm indication to an external electrical control or monitoring circuit when the associated circuit breaker enters the alarm or trip condition supported by the accessory.

The AL-X1 can be used in industrial distribution boards, electrical control panels, switchgear assemblies and automation systems where remote indication of circuit-breaker status is required.

By integrating an alarm contact with a compatible circuit breaker, panel designers can provide visual or remote alarm indication through signal lamps, annunciators, PLC inputs or other suitable monitoring equipment.

VITS supplies CHINT electrical accessories for industrial and commercial electrical applications.

2. Short Description

3. Key Features

• Alarm signalling accessory for compatible CHINT circuit breakers.

• Provides an external alarm indication for supported breaker conditions.

• Suitable for electrical distribution and control panels.

• Can be integrated with suitable indication and monitoring circuits.

• Supports remote alarm signalling where the control circuit is appropriately designed.

• Compact accessory design for compatible circuit-breaker assemblies.

• Suitable for industrial and commercial electrical installations.

4. Working Principle

The AL-X1 operates as an auxiliary signalling device associated with a compatible circuit breaker.

When the circuit breaker enters the alarm condition recognised by the AL-X1, its internal contact changes state according to the manufacturer’s contact arrangement. This signal can be connected to an external alarm circuit.

Possible applications include:

• Panel-mounted alarm lamps.

• Electrical annunciator systems.

• PLC digital inputs.

• Remote alarm monitoring.

• Building and industrial automation systems.

Important distinction: An alarm auxiliary contact is used for signalling. It does not independently interrupt the power circuit or provide overload, short-circuit or earth-leakage protection.

5. Technical Specifications

The following specifications are taken from CHINT’s published AL-X1 product information and catalogue.

Note: Ratings above are the accessory’s signalling-contact ratings, not the main circuit breaker’s power-circuit ratings.

6. Contact Configuration and Alarm Operation

The AL-X1 uses terminals 91, 92 and 94 for signalling. CHINT’s published contact-operation description specifies the following behaviour:

This arrangement allows a control panel to distinguish a manual opening from a fault-trip alarm, when wired according to the manufacturer’s diagram.

Wiring caution: Use the official CHINT wiring diagram and verify the actual contact state with a continuity test before connecting the alarm circuit.

7. Applications

The CHINT AL-X1 can be used in:

• Industrial electrical distribution panels.

• Commercial distribution boards.

• Control and automation panels.

• Remote circuit-breaker fault indication.

• PLC-based monitoring systems.

• Electrical annunciator and alarm systems.

• Industrial machinery control panels.

• Building electrical monitoring systems.

8. Benefits for Panel Builders and Users

• Remote indication: Helps communicate breaker alarm status to a separate control location.

• Fault identification: Differentiates fault tripping from manual switching through its specified contact behaviour.

• Automation integration: Can provide a signal to compatible PLC or monitoring inputs.

• Panel monitoring: Supports improved visibility of circuit-breaker operating conditions.

• Compact assembly: Designed for attachment to the compatible CHINT breaker.

• Long operating life: Manufacturer specifies at least 10,000 operating cycles.

9. Compatibility

According to CHINT Global, the AL-X1 is designed for use with:

• CHINT NXB-63 series circuit breakers.

• CHINT NXB-40 series circuit breakers.

  CHINT global+1

Before ordering, confirm the breaker series, exact model, accessory mounting arrangement and product revision. Do not assume compatibility with every CHINT MCB or other manufacturer’s breakers.

10. Installation Guidelines

1. Isolate the electrical supply and apply appropriate lockout/tagout procedures.

2. Confirm the circuit breaker is an approved compatible NXB-40 or NXB-63 model.

3. Follow the CHINT installation instructions for removing the breaker side cover.

4. Attach the AL-X1 to the designated left-side accessory position.

5. Assemble the breaker and accessory on the TH35-7.5 mounting rail.

6. Connect the external signalling circuit to terminals 91, 92 and 94 according to the manufacturer’s wiring diagram.

7. Check the control-circuit voltage and current against the AL-X1 contact ratings.

8. Test manual OFF operation and fault-trip indication under a safe, controlled commissioning procedure.

Installation must be carried out by a qualified electrical technician. Never remove or fit the accessory while the assembly is energised.

11. Important Engineering Notes

• AL-X1 is an alarm signalling accessory, not a protective switching device.

• It does not replace the circuit breaker’s overload or short-circuit protection.

• Its contacts must not be used to switch loads beyond their rated duty.

• Use an appropriately rated interposing relay if the connected control load exceeds the contact rating or requires electrical isolation.

• Confirm the required AC-12 or DC-12 rating for the actual control circuit.

• Use the manufacturer terminal diagram rather than assuming conventional NO/NC terminal numbering.

12. Difference Between AX-X1 and AL-X1

The AL-X1 is the appropriate selection where the control panel needs the specific fault-trip alarm behaviour documented by CHINT.

13. Frequently Asked Questions (FAQs)

Q1. What is the CHINT AL-X1?

The AL-X1 is an alarm auxiliary contact designed to provide remote indication of compatible circuit-breaker operating and fault-trip conditions.

Q2. Which circuit breakers are compatible with AL-X1?

CHINT specifies compatibility with NXB-40 and NXB-63 series circuit breakers. Confirm the exact breaker model before ordering.

Q3. What is the difference between AX-X1 and AL-X1?

AX-X1 is an auxiliary contact for general status signalling, while AL-X1 provides alarm signalling with a contact arrangement that distinguishes manual opening from fault tripping.

Q4. What are the AL-X1 terminal numbers?

The documented terminals are 91, 92 and 94. Follow the manufacturer’s wiring diagram.

Q5. What is the contact rating?

• 415V AC: 3A

• 240V AC: 6A

• 130V DC: 1A

• 48V DC: 2A

• 24V DC: 6A

These ratings apply to the specified AC-12 and DC-12 utilization categories.

Q6. Can AL-X1 be connected to a PLC?

Yes, it can provide a signalling input to a PLC when the PLC input circuit is compatible with the AL-X1 contact ratings and wiring arrangement.

Q7. Does AL-X1 provide overload protection?

No. It is a signalling accessory and does not replace the circuit breaker’s protection functions.

Q8. What is the price of CHINT AL-X1 in Pakistan?

The VITS listed price is PKR 1,200. Confirm current stock and price before placing an order.

Q9. Can AL-X1 be installed on any MCB?

No. CHINT specifies NXB-40 and NXB-63 compatibility. Other models require manufacturer confirmation.

14. Price and Ordering Information

Request a Quote: Contact VITS Pakistan

WhatsApp / Phone: 03134414901

15. Why Buy from VITS Pakistan?

VITS provides electrical products and engineering solutions for industrial, commercial and infrastructure projects.

• CHINT electrical products and accessories.

• Industrial electrical equipment sourcing.

• Switchgear and control panel solutions.

• Technical product selection assistance.

• Electrical project supply and support.

• Quotation and procurement assistance.

VITS focuses on CHINT Global Version products. Product-specific compliance documents should be confirmed for the supplied model and batch.

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