Allicdata Part #: | CB251-20-ND |
Manufacturer Part#: |
CB251-20 |
Price: | $ 15.30 |
Product Category: | Circuit Protection |
Manufacturer: | Eaton |
Short Description: | CIR BRKR 20A 32VDC AUTO RESET |
More Detail: | N/A |
DataSheet: | CB251-20 Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
10 +: | $ 13.90470 |
Series: | CB251 |
Part Status: | Active |
Lead Free Status / RoHS Status: | -- |
Breaker Type: | Thermal |
Moisture Sensitivity Level (MSL): | -- |
Current Rating: | 20A |
Voltage Rating - DC: | 32V |
Number of Poles: | 1 |
Actuator Type: | Automatic Reset |
Illumination: | -- |
Illumination Voltage (Nominal): | -- |
Mounting Type: | Panel Mount |
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Introduction
CB251-20 is a specific type of circuit breaker which is designed for commercial and residential applications. It is a molded case designed for operation from 120VACRMS (current) and 277VACRMS (voltage). It is suitable for use in both indoor and outdoor environments and has a UL® listing for commercial and residential applications. This article will discuss the application field and working principle of CB251-20.
Application Field
The CB251-20 circuit breaker is specifically designed and approved for general purpose applications in most residential, commercial and industrial applications. This makes it suitable for applications such as lighting, small motors and heating and air conditioning systems. The breaker is UL Listed and CSA Certified for use in both indoor and outdoor applications. It meets UL 943, UL 508 and CSA 22 standards for shock and fire hazards.
The CB251-20 is UL Listed for branch circuit protection and meets UL 489 code requirements for branch circuit protection. It also meets UL 1699 for Standard for Motor Disconnect and Short Circuit Protection. The breaker is designed for a maximum voltage of 277VACRMS and a maximum current of 20 Amps.
Working Principle
The CB251-20 circuit breaker has a two-stage operation. The first stage operates at a current level of 25% of the rated current. At this level, the breaker is able to detect small changes in current, preventing false trips while also allowing it to trip at a safe rate. If the current reaches the overload setting, the breaker will trip at the faster rate of an instantaneous trip setting.
The CB251-20 also has surge protection. This protection is provided by a low-cost MOV that is placed in a non-tripping circuit in the breaker housing. The MOV is used to absorb transient energy created by currents and spikes. This energy will then be redirected through the breaker back to ground. The MOV also provides additional arc fault protection. It is designed to detect low-level arcing within the breaker, preventing fire hazards before they occur.
The CB251-20 also has a field replaceable trip mechanism which allows for easy troubleshooting and replacing of the breaker. This mechanism is designed to detect changes in current over a wide range of conditions, providing a safe trip for dangerous electrical conditions. This trip mechanism is based on a magnetic trip unit and is rated at 10,000 operations.
Conclusion
In conclusion, CB251-20 is a specific type of circuit breaker designed for general purpose applications in both residential and commercial settings. It is UL Listed and CSA Certified for use in both indoor and outdoor settings. It has a two-stage operation, surge protection and a field replaceable trip mechanism. This makes it a safe and reliable circuit breaker for any application.
The specific data is subject to PDF, and the above content is for reference
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CB2518T3R3M | Taiyo Yuden | -- | 8000 | FIXED IND 3.3UH 1.2A 143 ... |
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