Circuit breaker

 product descriptions 

### 1. Posmith Electric Miniature Circuit Breakers (MCBs) this is a collection of multi-pole miniature circuit breakers designed for both AC and DC circuit protection.

 * **Brand:** Posmith Electric

 * **Models Shown:**

   * **ND1B-63DC:** A 63\text{A} rated DC circuit breaker (represented with both red and blue toggle switches), rated for up to \text{DC } 1000\text{V}.

   * **NSBB-125 / ND1B-125DC:** Higher capacity 125\text{A} breakers (400\text{V}\sim AC and \text{DC } 1000\text{V} variants respectively) used for heavier electrical loads, such as solar inverter systems or main distribution panels.

### 2. Posmith Electric Surge Protective Devices (SPD these are modular surge protectors used to safeguard electrical installations and sensitive equipment against voltage spikes (such as lightning strikes).

 * **Brand:** Posmith Electric

 * **Model:** PSM-1

 * **Variants:**

   * **DC Surge Protector (Left):** Rated for solar/DC systems with a maximum voltage (U_{cpv}) of \text{DC } 1000\text{V}. It has a nominal discharge current (I_n) of 20\text{kA} and a maximum discharge current (I_{max}) of 40\text{kA}.

   * **AC Surge Protector (Right):** Rated for standard grid alternating current with a continuous operating voltage (U_c) of 385\text{V}, also featuring a 20\text{kA}/40\text{kA} surge rating.

 * **Features:** Removable cartridges with visual status indicator windows (green for good, red for replacement required).

### 3. Schneider Electric C120HDC Miniature Circuit Breake, this is a high-performance commercial-grade heavy-duty circuit breaker.

 * **Brand:** Schneider Electric

 * **Model:** C120HDC

 * **Specifications:**

   * **Current Rating:** C125 (125\text{A}, C-curve tripping characteristic).

   * **Voltage Rating:** Rated for high-voltage DC systems up to \text{DC } 1000\text{V}.

   * **Breaking Capacity:** 10000\text{A} (10\text{kA}) breaking capacity, making it ideal for robust industrial, solar PV, or infrastructure applications.

 * **Design:** 2-Pole configuration tied with a central metal toggle bar for simultaneous tripping.