The part number **CA2-B0-34-635-111-C** refers to a high-quality **Hydraulic Magnetic Circuit Breaker** manufactured by **Carling Technologies** (now part of Littelfuse). These breakers are widely used in telecommunications, marine, and industrial automation due to their precision and reliability. --- ### 1. Specification Breakdown The part number is an alphanumeric code where each section defines a specific physical or electrical characteristic: | Code Segment | Feature | Description | | :--- | :--- | :--- | | **CA2** | Series | C-Series Circuit Breaker, 2-Pole | | **B0** | Actuator | Standard Toggle (Handle) | | **34** | Delay | Medium Delay (DC/60Hz) - allows for brief surges | | **635** | Current Rating | **35 Amperes** | | **111** | Terminal/Mounting | Stud Terminals (10-32) / Threaded Inserts | | **C** | Certification | UL Recognized, CSA Certified | --- ### 2. Key Technical Features * **Dual Pole Configuration:** Being a 2-pole breaker, it can interrupt two lines simultaneously, providing safety for 240V AC systems or dual DC rails. * **Hydraulic-Magnetic Trip Mechanism:** Unlike thermal breakers, this device uses a solenoid with a dampening core. It is **temperature independent**, meaning it will not "nuisance trip" just because the ambient environment is hot. * **Full Load Capacity:** It is designed to carry 100% of its rated current (35A) continuously. * **Interrupting Capacity:** Typically rated for 5,000 Amps, allowing it to safely clear significant short circuits without exploding or welding shut. --- ### 3. Electronic Application This component is typically installed in the following scenarios: 1. **Power Distribution Units (PDUs):** Protecting server racks from overcurrent. 2. **Marine Panels:** Because it is resistant to vibration and heat, it is a standard for boat electrical systems. 3. **Industrial Controls:** Used to protect motors or heavy power supplies where inrush current (initial spike) occurs. --- ### 4. Comparison: Thermal vs. Magnetic | Feature | Thermal Breaker | CA2-B0-34-635-111-C (Magnetic) | | :--- | :--- | :--- | | **Tripping Basis** | Heat (Bimetal strip) | Magnetic Flux (Solenoid) | | **Ambient Temp Effect** | Trips earlier in hot weather | No effect on trip point | | **Reset Time** | Must cool down before reset | Can be reset immediately |