1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your CHTAIXI 1 Pole Miniature Circuit Breaker, model DZ47N-63. This device is designed to protect electrical circuits from damage caused by overcurrent, which can result from an overload or short circuit.
The CHTAIXI miniature circuit breaker is suitable for 120V/240V AC systems and features a DIN rail mount for easy integration into electrical panels.
Image 1.1: Three CHTAIXI 1 Pole Miniature Circuit Breakers with included DIN rail and screws.
2. Safety Information
WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel. Always disconnect power before working on electrical circuits.
- Ensure all local and national electrical codes are followed during installation.
- Do not install or operate the circuit breaker if it appears damaged.
- Verify the voltage and current ratings of the circuit breaker match the application requirements.
- Use appropriate personal protective equipment (PPE) when working with electricity.
3. Product Features
The CHTAIXI DZ47N-63 miniature circuit breaker incorporates several design elements for reliable circuit protection:
- Overload Protection: Automatically disconnects the circuit when current exceeds the rated value for a prolonged period.
- Short-Circuit Protection: Rapidly trips to interrupt the circuit during a sudden, high current surge.
- Control and Isolation: Can be manually switched ON/OFF to control power flow and isolate circuits for maintenance.
- C-Curve Tripping Characteristic: Magnetic trip range is 5-10 times the rated current, suitable for general applications.
- Silver Alloy Contacts: Designed to reduce heat generation and arcing during disconnection, enhancing durability.
- Flame Retardant Material Shell: Provides enhanced safety in case of electrical faults.
- Color Indicator: Visually indicates the ON/OFF status of the breaker.
Image 3.1: Visual representation of overload protection, short-circuit protection, and control isolation.
Image 3.2: Depiction of the thick magnetic trip coil for efficient current handling.
Image 3.3: The high-quality, flame-retardant plastic shell of the circuit breaker.
Image 3.4: Silver alloy contacts designed for durability and reduced arcing.
4. Installation
4.1 Mounting the DIN Rail
- Select a suitable location within your electrical panel for the DIN rail.
- Secure the DIN rail to the mounting surface using the provided screws. Ensure it is level and firmly attached.
Image 4.1: Diagram for DIN rail mounting.
4.2 Installing the Circuit Breaker
- Hook the top edge of the circuit breaker onto the DIN rail.
- Press the bottom edge of the circuit breaker firmly until it clicks into place on the DIN rail.
Image 4.2: Side view illustrating the DIN rail mounting mechanism.
Image 4.3: Step-by-step diagram for circuit breaker installation on DIN rail.
4.3 Wiring Connections
- Ensure the main power supply is OFF before making any connections.
- Connect the incoming live wire to the top terminal of the circuit breaker.
- Connect the outgoing live wire to the bottom terminal of the circuit breaker.
- For soft silicone wires, it is recommended to crimp the wire ends with copper crimps before inserting them into the screw clamp terminals.
- Tighten the screw clamp wires to a torque of 2.5 N.m to ensure a secure connection.
5. Operating Instructions
5.1 Turning ON/OFF
- To turn the circuit breaker ON, push the toggle switch upwards. The color indicator will show green.
- To turn the circuit breaker OFF, push the toggle switch downwards. The color indicator will show red.
5.2 Tripping Mechanism
In the event of an overload or short circuit, the circuit breaker will automatically trip, moving the toggle switch to the OFF position (red indicator). This action protects the circuit from damage.
6. Maintenance
- Periodically inspect the circuit breaker for any signs of physical damage, discoloration, or loose connections.
- Ensure the area around the circuit breaker is clean and free from dust or debris to prevent overheating.
- Do not attempt to repair a damaged circuit breaker; replace it with a new one of the same specifications.
7. Troubleshooting
7.1 Breaker Trips Frequently
- Overload: The circuit may be drawing more current than the breaker's rated capacity. Disconnect some devices from the circuit or redistribute the load.
- Short Circuit: A direct connection between live and neutral/ground wires. This requires immediate investigation by a qualified electrician to identify and rectify the fault.
- Faulty Appliance: An appliance connected to the circuit may be defective. Unplug all appliances and plug them back in one by one to identify the faulty device.
7.2 Breaker Does Not Reset
- If the breaker does not reset after addressing a trip, there might be a persistent fault in the circuit or the breaker itself may be damaged. Do not force the switch. Consult a qualified electrician.
8. Specifications
| Specification | Value |
|---|---|
| Product Type | AC Miniature Circuit Breaker |
| Model Number | DZ47N-63 |
| Rated Operational Voltage | 120V / 240V AC |
| Rated Current (In) | 6 Amp |
| Poles | 1P |
| Trip Unit Technology | Thermal-magnetic |
| Curve Code | C |
| Breaking Capacity | 6 kA Ics=Icu |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Mechanical Durability | 10,000 cycles |
| Electrical Durability | 4,000 cycles |
| Operating Temperature | -13°F (-25℃) ~ 140°F (60℃) |
| Mounting Support | 35 mm DIN rail |
| Tightening Torque | 2.5 N.m |
| Standard | IEC60898-1 |
| Product Dimensions | 2.95 x 0.7 x 3.15 inches |
8.1 Reference Wire Size
Image 8.1: Dimensions, reference wire sizes, and C-curve tripping characteristics.
| Rated Current (In) | Copper Wire Cross-sectional Area | Cable Size (AWG) |
|---|---|---|
| 6 A | 1 mm² | 16-18 AWG |
| 10 A | 1.5 mm² | 14-16 AWG |
| 16 A, 20 A | 2.5 mm² | 12-14 AWG |
| 25 A | 4 mm² | 10-12 AWG |
| 32 A | 6 mm² | 8-10 AWG |
| 40 A, 50 A | 10 mm² | 6-8 AWG |
| 63 A | 16 mm² | 4-6 AWG |
9. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact CHTAIXI customer service through the retailer where the product was purchased. Keep your purchase receipt for warranty claims.