EARU EACBDC-63

EARU EACBDC Series DC Miniature Circuit Breaker

Instruction Manual

For optimal performance and safe operation, please read this manual thoroughly before using the EARU EACBDC Series DC Miniature Circuit Breaker. Keep this manual for future reference.

Important Safety Instructions

⚠

The EACBDC circuit breaker series utilizes handle positions and status indicators to convey operational information, ensuring safe and reliable circuit protection. This product does not feature an explosion-proof structure and must not be used in flammable environments, such as those containing flammable gases, liquids, or explosives.

General Safety Information:

  1. Please use this product in accordance with the instructions in this manual.
  2. Do not disassemble this product by yourself.
  3. Pay attention to the rated voltage for use.

Product Description

The EACBDC series circuit breaker provides reliable overload and short-circuit protection for lighting and motor distribution systems. Featuring a lightweight, fire-retardant, and shockproof design, it offers high breaking capacity and quick tripping performance. It is designed for DC distribution systems and electric equipment, suitable for various fields including electric, post, traffic, and mining enterprises. The product complies with IEC60898-1 and GB14048.2 standards.

Key Features:

  • Thermoplastic Shell: Full inlet, impact resistant, recyclable, and self-extinguishing material.
  • Super Safety: Features classic U tunnel terminals to ensure solid and reliable line connections.
  • Optimized Air Flow: Original air flow design effectively reduces temperature between adjacent circuit breakers.
  • Ergonomic Design: Safety handle with a classic original design for comfortable and secure operation.

Specifications

Technical Parameters
ParameterValue
Product SeriesEACBDC
Poles2P
Rated VoltageDC 1000V
Rated Current Options6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
FunctionOverload and Short-circuit Protection
Breaking Capacity4500A
Rated Breaking Capacity6.0kA IEC60898 (0.5~63A), 6,10,15A IEC60947-2 (0.5~63A)
Characteristic CurveC type
Mounting MethodDIN-Rail Mounting
Product CertificationCE
Compliant StandardsIEC60898, GB14048.2
Mechanical LifeNot less than 20,000 cycles
Electrical LifeNot less than 8,000 times
Max. Fuse Connection100AgL (>10kA)
Selective Grade3
Working Ambient Temperature-10℃ to +40℃
Enclosed Protective ClassIP20
Dimensions (2P)80mm (H) x 35mm (W) x 75mm (D)
Diagram showing the dimensions of the EACBDC-63 circuit breaker: 80mm height, 35mm width for 2P, 75mm depth, and 45mm depth from front to mounting surface. Also lists Rated Working Voltage DC 1000V, Function Short circuit/overload protection, Mounting Method DIN-Rail Mounting, Poles 2P, Standard IEC60898, Mechanical Life Not less than 20000 times.
Figure 1: Product Dimensions and Basic Specifications

Setup & Installation

The EACBDC series circuit breaker is designed for DIN-rail mounting. Ensure all installations are performed by a qualified electrician and comply with local electrical codes.

  1. Mounting: Securely attach the circuit breaker to a standard DIN rail. The device features clips on the back for easy installation and removal.
  2. Wiring: Refer to the wiring diagram on the device. Connect the DC power input to terminals 1 and 3 (top) and the load output to terminals 2 and 4 (bottom). Ensure correct polarity for DC systems. The arrows on the device indicate the direction of current flow. Use appropriate wire gauges for the rated current.
  3. Fastening: Tighten the fastening screws on the terminals to ensure a solid and reliable connection.
Image showing the EACBDC-63 circuit breaker mounted on a standard DIN rail, demonstrating the mounting method.
Figure 2: DIN-Rail Mounting Example
Diagram labeling the components of the EACBDC-63 circuit breaker including Brand, Model Number, Rated Current, Breaking Capacity, Window Indication, Wiring diagram, Operating Handle, and Fastening Screws. A wiring diagram shows input at 1-3 and output at 2-4 with current flow indicated by arrows.
Figure 3: Component Overview and Wiring Diagram

Operating Instructions

The circuit breaker features an operating handle and a window indicator to show its status.

  1. Turning ON: Push the operating handle UP. The window indicator will show RED, indicating the circuit breaker is closed and the circuit is operating normally.
  2. Turning OFF: Push the operating handle DOWN. The window indicator will show GREEN, indicating the breaker is open and the circuit has stopped running.
  3. Automatic Tripping: In case of an overload or short-circuit, the circuit breaker will automatically trip, moving the handle to the DOWN position and displaying a GREEN indicator. Before resetting, identify and resolve the fault.
Diagram showing the window indicator operation display. When the handle is down, the indicator is green, meaning the breaker is open and the circuit stops running. When the handle is up, the indicator is red, meaning the circuit breaker is closed and the circuit is operating normally.
Figure 4: Window Indicator Operation Display
Video 1: Demonstration of Circuit Breaker Operation and DIN Rail Mounting

Maintenance

The EACBDC series circuit breaker is designed for long-term, reliable operation with minimal maintenance. However, periodic checks are recommended:

  • Visual Inspection: Regularly inspect the circuit breaker for any signs of physical damage, discoloration, or loose connections.
  • Terminal Tightness: Periodically check and re-tighten terminal screws to ensure optimal electrical contact and prevent overheating.
  • Environmental Conditions: Ensure the operating environment remains within the specified temperature range (-10℃ to +40℃) and free from excessive dust or moisture.
  • Cleaning: If necessary, gently clean the exterior of the circuit breaker with a dry, soft cloth. Do not use abrasive cleaners or solvents.

Troubleshooting

  • Circuit Breaker Trips Frequently: This indicates an overload or short-circuit condition.
    1. Disconnect all loads from the circuit.
    2. Reset the circuit breaker. If it holds, reconnect loads one by one to identify the faulty device.
    3. If the breaker trips immediately without load, there might be a short circuit in the wiring. Inspect wiring for damage.
    4. Ensure the total current draw does not exceed the rated current of the circuit breaker.
  • Circuit Breaker Does Not Reset: If the breaker trips and cannot be reset, there might be a persistent fault or internal damage.
    1. Ensure the fault (overload/short-circuit) has been cleared.
    2. If the issue persists, the circuit breaker may be damaged and require replacement.
  • No Power to Load:
    1. Check if the circuit breaker is in the 'ON' (red indicator) position.
    2. Verify input power to the circuit breaker.
    3. Check all wiring connections for tightness and continuity.

User Tips

  • DC Use Only: This circuit breaker is specifically designed for DC 1000V systems. It is NOT rated for AC usage. Using it in an AC circuit can lead to malfunction and safety hazards.
  • Input/Output Polarity: While some circuit breakers might be bidirectional, the wiring diagram for this model indicates specific input (1-3) and output (2-4) terminals with current flow direction. Always follow the marked polarity and connection points for optimal performance and safety.
  • Quantity for Projects: When planning for larger installations, ensure you order the correct quantity. If you need a bulk order, contact the seller directly to confirm availability and order limits.

Warranty & Support

For warranty information, technical support, or any product-related inquiries, please contact the seller or the EARU Official Store directly. Keep your purchase records for reference.

A user manual in PDF format is also available for download. Reference: User manual (PDF)

Documents - EARU – EACBDC-63

no relevant documents