The **M2SES2-63-R2** is a specific model within the series of **Magnetic-Hydraulic Circuit Breakers**, typically manufactured by companies like **Carling Technologies** (often part of their M-Series). These components are designed for precision protection in telecommunications, data processing, and industrial control systems. --- ### 1. Part Number Breakdown The alphanumeric code represents specific electrical and physical characteristics: | Code Segment | Description | Specific Meaning | | :--- | :--- | :--- | | **M** | Series | M-Series Miniature Magnetic Circuit Breaker | | **2** | Number of Poles | Two-pole configuration | | **SE** | Actuator Type | Sealed Toggle or specialized rocker (often environmental protection) | | **S** | Terminal Style | Screw Terminals (typically 8-32 or 10-32) | | **2** | Circuit Type | Series Trip (Current sensing) | | **63** | Delay/Curve | Standard Time Delay (Medium curve for general loads) | | **R2** | Rating/Spec | Specific current rating or Revision suffix | --- ### 2. Key Electronic Features * **Magnetic-Hydraulic Technology:** Unlike thermal breakers, this part uses a solenoid with a fluid-filled dashpot. It provides precise tripping regardless of ambient temperature, ensuring the device doesn't "nuisance trip" in hot environments. * **Two-Pole Protection:** This unit monitors and breaks two separate lines simultaneously. If a fault occurs on one line, both poles trip to ensure complete isolation of the load. * **Delay Curves:** The "63" designation usually indicates a medium delay curve. This allows for brief inrush currents (like starting a small motor) without tripping, while still providing fast protection against sustained overloads or short circuits. * **Trip-Free Mechanism:** A safety feature ensuring the contacts remain open during a fault even if the handle is forcibly held in the "ON" position. --- ### 3. Technical Specifications (Typical) | Parameter | Value/Range | | :--- | :--- | | **Voltage Rating** | Up to 250VAC or 80VDC (Model dependent) | | **Interrupt Capacity** | 1,000 to 5,000 Amps | | **Operating Temperature** | -40°C to +85°C | | **Mounting** | Front Panel / Snap-in or Bushing mount | | **Dielectric Strength** | 1,500V 60Hz | --- ### 4. Common Applications * **Telecommunications:** Protection for power distribution units (PDUs). * **Marine Electronics:** Reliable switching in humid or vibrating environments. * **Medical Equipment:** High-precision power control for diagnostic machines.