The part number **BA2-B0-46-610-11D-C3** refers to a high-performance **Magnetic Hydraulic Circuit Breaker** manufactured by **Carling Technologies** (now part of Littelfuse). It belongs to the **B-Series**, which is highly versatile and used worldwide in telecommunications, marine, and industrial automation. --- ### 1. Specification Breakdown Each segment of the part number defines a specific physical or electrical characteristic of the device: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **BA** | B-Series Circuit Breaker (Compact, 1-6 poles) | | **Actuator** | **2** | Handle style (standard toggle) | | **Poles** | **B0** | Two-pole configuration | | **Circuit** | **46** | Series Trip (Current Trip) with auxiliary switch | | **Rating** | **610** | 10.0 Amperes (Full load rating) | | **Frequency** | **11** | DC Medium delay (for standard electronic loads) | | **Terminals** | **D** | Screw Terminals (10-32 with washers) | | **Actuator Color** | **C3** | White toggle with "ON/OFF" vertical markings | --- ### 2. Key Technical Features * **Magnetic-Hydraulic Design:** Unlike thermal breakers, these are not affected by ambient temperature. They maintain their precise trip point regardless of whether the environment is freezing or hot. * **Two-Pole Protection:** The "B0" designation indicates it can break two separate lines simultaneously, providing complete circuit isolation. * **Delay Curve (11):** This is a "Medium Delay" specifically calibrated for DC circuits. It allows for short-duration inrush currents (like starting a small motor) but trips quickly on sustained overloads. * **Interrupting Capacity:** Typically rated for 5,000 Amps (AIC), making it robust against high-fault current scenarios. --- ### 3. Common Applications Due to its precision and reliability, this specific configuration is commonly found in: 1. **Marine Panels:** Protecting sensitive navigation electronics. 2. **Telecommunications:** Used in power distribution units (PDUs). 3. **Industrial Controls:** Protecting PLCs and 24V DC power supplies. 4. **Solar Systems:** Acting as a disconnect/protector for DC battery strings. --- ### 4. Comparison Table: Thermal vs. Magnetic (BA-Series) | Feature | Thermal Breaker | BA2-B0-46-610... (Magnetic) | | :--- | :--- | :--- | | **Temperature Sensitivity** | High (trips early in heat) | None (stable trip point) | | **Reset Time** | Must cool down first | Immediate reset possible | | **Service Life** | Shorter | Very long (designed for precision) |