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Circuit breakers used in household single-phase circuits are available in 1P, 1P+N, and 2P. Among them, the 1P circuit breaker means that only the live wire can be disconnected, and the current on the live wire is monitored at all times. Once the current on the live wire reaches the rated current, the circuit breaker can provide protection for the live wire - tripping.
1P+N circuit breaker means that the live and neutral lines can be disconnected, but the current detection can only detect the live line and provide protection for the live line.
The 2P circuit breaker can disconnect the live and neutral lines and simultaneously detect the current on the live and neutral lines.
General light circuit, you can choose 1P or 1P+N circuit breaker. The socket circuit must have a leakage protection accessory. Generally, the five-hole socket selects the 1P or 1P+N leakage circuit breaker; the three-hole socket must select the 2P leakage circuit breaker.
The beam splitter reflects part of the incident light energy, absorbs a relatively small part, and transmits the rest of the energy. The beam splitter has obvious neutral color characteristics. The beam splitter is made by vacuum evaporation of a multilayer dielectric film. There is no problem that the metal film will absorb. The total penetration and reflection ratio is close to 100. Function: It is made by vacuum evaporation method, and the light can be changed after passing through the filter. The penetration ratio, for example: half penetration and half reflection, with low absorption characteristics.
When the laser power that needs to be measured is far greater than the power/energy meter measurement range that can be provided, a beam splitter can be used.
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