Bussmann CBS-10

Bussmann CBS-10 Circuit Breaker User Manual

Type II Standard Duty Automotive with Stud Terminals - 10 A

Introduction

This manual provides essential information for the proper installation, operation, and maintenance of the Bussmann CBS-10 Circuit Breaker. Please read this manual thoroughly before using the product to ensure safe and efficient performance.

The Bussmann CBS-10 is a Type II, Standard Duty Automotive Circuit Breaker designed for reliable circuit protection in automotive applications. It features a modified reset design, which means it remains tripped as long as power is supplied to the circuit. Resetting the breaker requires turning off the circuit or the ignition switch.

Safety Information

Always disconnect power before installing or servicing the circuit breaker. Failure to do so may result in electrical shock, injury, or damage to the product or vehicle electrical system. Ensure proper wiring and connections according to automotive electrical standards.

Do not exceed the specified current rating of 10 Amps.
Ensure the circuit breaker is installed in a dry environment, protected from moisture and extreme temperatures.
Verify correct polarity when connecting to the electrical system.
Consult a qualified automotive electrician if you are unsure about any installation steps.

Product Overview

Bussmann CBS-10 Circuit Breaker in packaging

Figure 1: Bussmann CBS-10 Circuit Breaker as supplied, showing its compact form factor and stud terminals within clear protective packaging.

The Bussmann CBS-10 is a compact, durable circuit breaker featuring a plastic base with a metal housing. It is equipped with 10-32 stud terminals for secure electrical connections. This Type II breaker is designed to protect automotive circuits from overcurrent conditions.

Type: Type II Standard Duty Automotive Circuit Breaker
Current Rating: 10 Amps
Voltage: 12 DC
Terminals: 10-32 Stud Terminals
Reset Type: Modified Reset (requires power cycle or ignition off to reset)

Setup and Installation

Proper installation is crucial for the safe and effective operation of the CBS-10 circuit breaker. Follow these steps carefully:

Disconnect Power: Before beginning any installation, ensure the vehicle's battery is disconnected to prevent accidental short circuits or electrical shock.
Identify Mounting Location: Choose a suitable, dry, and secure location for mounting the circuit breaker. It should be easily accessible for inspection and protected from physical damage and excessive heat.
Mount the Breaker: Secure the circuit breaker using appropriate fasteners through its mounting holes. Ensure it is firmly attached and does not vibrate loose.
Connect Wiring:
- Connect the positive input wire from the power source to one of the 10-32 stud terminals.
- Connect the positive output wire leading to the protected circuit to the other 10-32 stud terminal.
- Ensure all connections are tight and secure to prevent arcing or poor conductivity. Use appropriately sized ring terminals for the stud connections.
Verify Connections: Double-check all wiring connections for correctness and security.
Reconnect Power: Once all connections are verified, reconnect the vehicle's battery.

Note: The CBS-10 is designed for 12V DC systems. Do not use it in applications exceeding its rated voltage or current.

Operating Instructions

The Bussmann CBS-10 circuit breaker operates automatically to protect your electrical circuit from overcurrent conditions. Understanding its reset mechanism is key to its operation.

Normal Operation: Under normal operating conditions, the circuit breaker allows current to flow through the protected circuit.
Overcurrent Protection: If the current flowing through the circuit exceeds 10 Amps, the circuit breaker will automatically trip, interrupting the circuit and protecting downstream components from damage.
Modified Reset Feature: Unlike some circuit breakers that automatically reset once the fault is cleared, the CBS-10 features a "modified reset" design. This means it will remain in the tripped state as long as power is applied to the circuit.
Resetting the Breaker: To reset the CBS-10 circuit breaker after it has tripped, you must remove power from the circuit. This can be achieved by:
- Turning off the specific circuit switch or power source connected to the breaker.
- Turning off the vehicle's ignition switch (if the breaker is wired to an ignition-switched circuit).
- Disconnecting the vehicle's battery (as a last resort for persistent issues).
Once power is removed and then reapplied, the breaker will reset, assuming the overcurrent condition has been resolved.
Troubleshooting Trips: If the breaker repeatedly trips, it indicates a persistent overcurrent condition or a fault in the circuit. Do not attempt to force the breaker to stay closed. Investigate and resolve the underlying issue before re-applying power.

Maintenance

The Bussmann CBS-10 circuit breaker is designed for minimal maintenance. However, periodic checks can help ensure its longevity and reliable performance.

Visual Inspection: Periodically inspect the circuit breaker for any signs of physical damage, corrosion on the terminals, or discoloration.
Connection Integrity: Ensure that the stud terminal connections remain tight and secure. Loose connections can lead to resistance, heat buildup, and potential circuit issues.
Environmental Protection: Verify that the mounting location remains dry and free from excessive dust or debris.
Cleaning: If necessary, gently clean the exterior of the breaker with a dry, soft cloth. Do not use liquid cleaners or solvents.

Note: The circuit breaker is a sealed unit and is not user-serviceable. Do not attempt to open or repair the unit.

Troubleshooting

If you experience issues with your Bussmann CBS-10 circuit breaker, refer to the following common problems and solutions:

Problem	Possible Cause	Solution
Breaker trips immediately or frequently.	Overload on the circuit (current draw exceeds 10 Amps). Short circuit in the wiring or connected device. Faulty wiring or loose connections. Damaged circuit breaker.	Reduce the load on the circuit. Inspect wiring and connected devices for shorts. Check and tighten all electrical connections. If all else fails, replace the circuit breaker.
Breaker does not reset after tripping.	Power not fully removed from the circuit. Persistent overcurrent condition. Internal damage to the breaker.	Ensure the circuit's power source (or ignition) is completely turned off before attempting to reset. Identify and resolve the overcurrent issue before re-applying power. Replace the circuit breaker if it remains tripped after power cycling and fault resolution.
No power through the breaker, but it hasn't tripped.	Loose or corroded connections. Power source issue (e.g., dead battery, blown fuse upstream). Internal failure of the circuit breaker.	Check and clean all connections. Verify power supply to the breaker. Test the breaker for continuity. If no continuity, replace it.

If troubleshooting steps do not resolve the issue, it is recommended to consult a qualified automotive electrician.

Specifications

Attribute	Value
Model Number	CBS-10
Type	Type II Standard Duty Automotive Circuit Breaker
Current Rating	10 Amps
Voltage Rating	12V DC
Terminal Type	10-32 Stud Terminals
Housing Material	Plastic base with metal housing
Reset Type	Modified Reset (requires power cycle or ignition off)
Mounting Type	Panel Mount

Warranty Information

Specific warranty details for Bussmann products are typically provided at the point of purchase or through the official Bussmann (Eaton) website. Generally, circuit breakers are covered against defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

For detailed warranty terms and conditions, please refer to the official Bussmann or Eaton documentation that accompanied your purchase, or visit their official website.

Support and Contact

For technical assistance, product inquiries, or support regarding your Bussmann CBS-10 Circuit Breaker, please contact Bussmann customer service. Contact information can typically be found on the official Eaton/Bussmann website or on your product packaging.

When contacting support, please have your product model number (CBS-10) and any relevant purchase information ready.