What Controls a Motor? In 1887 Nikola Tesla invented an alternating current (AC) Motor to harness the power of electricity. It is a great invention but not as useful unless operators could turn the motor on and off. Therefore the “knife switch” was created, which connected the power to the motor when the operator manually pulled […]
Fun fact, Square D did not change its name until 1917, fifteen years after the company was established. The name change was due to the brand’s trademark “D” on conduit boxes and switches. Since then, Square D has been a leader and an innovative company in the electricity and automation management industry. Square […]
Electrical buckets are more commonly known as motor control center (MCC) buckets. Essentially, they are metal enclosures that house the control portion of a motor control center. They play a very important role in the industrial power control and distribution systems. Buckets are mainly used in manufacturing facilities for their fast and easy […]
The simple answer is, of course, Siemens – they make their own well-known and durable breakers. Siemens has been around for over 150 years in engineering and world history in general. They have been making circuit breakers for a long time and are one of the top breaker manufacturers in the industry. Their simple design make […]
Eaton / Cutler Hammer “HFD 65k” Circuit Breakers are part of the Series C, F-Frame type circuit breakers most commonly used as branch devices in Eaton / Cutler Hammer panelboards type PRL3 and type PRL4 as well as POW-R-LINE C switchboards. They are commonly available in 1P, 2P and 3P configurations. Select from the table […]
A shunt trip is an optional accessory device that electricians and/or manufacturers install to a circuit breaker. This is known as a shunt trip circuit breaker. Some circuit breakers allow shunt trip kits to be installable in the field. Others require factory installation when ordering the circuit breaker. You can check your specific type of […]
BD1520 is an Eaton / Cutler Hammer brand miniature molded case circuit breaker. This breaker is a tandem / circuit limiting breaker. In other words, BD1520 is a double circuit breaker that takes up one circuit breaker space on a panelboard. However, it does not have a common trip or handle tie for simultaneous disconnecting of […]
Who doesn’t get a little frustrated when the power goes out every now and then? Especially when you’re in the middle of something. Circuit breakers seem to fail at the least opportune time. But why do circuit breakers fail anyway? First, let’s get back to the basics. We know that circuit breakers trip when there’s […]
Circuit breakers are safety devices that interrupt the flow of current. This happens if there’s either a gradual increase in load or a short circuit, which trips the breaker instantly. The most common times for a breaker to trip in a household are when devices which convert electrical energy to heat are in use. Examples […]
Looking to replace circuit breakers in your Siemens electrical service panel? The straightforward answer is: read your panel for manufacturer’s instructions on acceptable breaker replacements. If the instructions are hard to read (normally they fade over time), then check your existing breakers and replace those with the same type. Firstly, remove one of the old […]
