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A circuit allows the electrical current to pass through. The current flows from higher voltages to lower voltages. A simple electrical circuit connects a power source, the grid or a battery, and an end device, electronics, or electrical appliances. As the circuit gets more complex (more devices connect to it), it becomes more challenging for the current to flow through the circuit and faults may occur. When any of the faults take place in the system, it is most likely to fail the system and even damage the devices permanently. Thus, measures need to be taken to protect the system as well as the units that run on it.
The circumstance that can potentially pose a risk to the circuit and the appliance includes overcurrent, overheat, short circuit, overload, high/low voltage, and so forth. To prevent the system from damage, the most common circuit protection approach is to open (break) the circuit to stop the current flow. The device that is responsible for this job is called the circuit breaker. Depending on the actual application of the circuit, there are several types of circuit breakers. There are thermostats, motor protection circuit breakers, miniature circuit breakers, thermal fuses, bimetal control switches, and more. Scroll down to see Sang Mao’s circuit breaker selections. If you are looking for the best circuit protection solution for your system, feel free to leave us a message and we will get back to you shortly.
Thermal Circuit Breakers | Overload Protectors
An electrical circuit breaker is a common approach to the protection of electrical circuits and appliances. The goal of the circuit breaker is to prevent short circuit, overload, overcurrent, overheating, and other circumstances that may damage a circuit. Generally speaking, it functions much the same as a fuse; some refer to the circuit breaker as the fuse circuit breaker as a result. Though they serve the same purpose, these two devices are distinctive from how they work. A typical fuse needs replacement after it is triggered, whereas the circuit breaker can be reset and reused multiple times.
Based upon the configuration of the circuit breaker and how it is reset, there are several types of it. You can find the switch-type and push button-type circuit breakers, which are easy to reset. Just hit the switch or push the button and it is ready to go. Besides these manually reset devices, there are also automatically reset circuit breakers, and Sang Mao offers both these types so that you can find the right type of your application. We also supply circuit protection units with particular designs. For example, we have the miniature circuit breaker (MCB) for low voltage circuits, hence a low-voltage circuit breaker. We also have temperature-sensitive circuit breakers that are reliable for thermal control. Scroll down to see our products and feel free to leave us a message.
Thermostats | Overheat Protector
Thermostats are a device that controls the temperature in an environment. To be specific, the thermostat maintains the temperature at a preset degree by controlling the heater or air conditioner. The working principle of this unit is simple. When the temperature is below the desired level, the thermostat turns on the heater and vice versa. As a result, the thermostat is also called the temperature switch or thermal switch. In short, such a device continuously senses the temperature in a system and turns on and off the heater to keep the temperature at a certain level.
The use of a thermostat switch is mostly involved when the heater or air conditioner is implemented. For example, there is the thermostat switch in the building heating system, central AC system, water heater, the kitchen equipment including fridges, toasters, ovens, labs, and medical facilities. In each of the applications, different types of thermostats are utilized. The two primary types are mechanical and digital. Sang Mao offers a series of mechanical thermal switches that work by thermal expansion. This type of thermostat is also called bimetal thermostat and bimetal temperature switch. Scroll down to see Sang Mao's auto-reset, manual-reset, and snap-action thermostats.
Motor Protectors
An electrical motor is comprised of many parts, including the rotor, coil, casing, seal, to name a few. The motor operates when it connects to a circuit where the current passes through. The current, load, heat, etc. affect the operation of the motor as well as its parts. To protect the motor against damages caused by those factors, the motor protection circuit breaker (MPCB) is required. The MPCB provides the motor with thermal overload protection, short circuit protection, phase loss protection, and controls the on and off of the unit. Sang Mao offers a selection of single and three-phase motor protection circuit breakers. Scroll down to see our products and feel free to leave us a message.