BK/HTB-66-R

Series:	HTB
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Fuseholder Type:	Holder
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge
For Use With/Related Products:	3AG
Fuse Size:	1/4" Dia x 1 1/4" L (6.4mm x 31.8mm)
Number of Circuits:	1
Voltage:	250V
Current Rating:	20A
Mounting Type:	Panel Mount
Orientation:	--
Termination Style:	Quick Connect - 0.250" (6.3mm)
Contact Material:	--
Contact Finish:	--

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Introduction
The BK/HTB-66-R is a fuseholder, used in the protection of overload circuits. It is composed of a receptacle, a clip, a soldering lug and a nut. BK/HTB-66-R also integrates an test switch, making it very practical. It offers improved installation and provides the safety of disconnecting the circuit when tests are conducted. The superior design of the BK/HTB-66-R ensures a secure connection.

Application Field
The BK/HTB-66-R can be used in wide range of applications. It is mainly used in industrial automation and control, dry contact switching, low-voltage industrial distribution, residential overcurrent protection and other low energy applications. This fuseholder is particularly suitable for applications with high temperatures and hostile environments, such as construction sites and harsh environments, due to its wide temperature range, from -50 to +105 °C. One example is an application where the BK/HTB-66-R is used to protect motor controls in a factory. The factory relies on these motors to processes raw materials into consumer ready products. As such, its essential to ensure the motor controls are properly protected to prevent downtime and expensive repair costs.

Design and Working Principle
The BK/HTB-66-R has a unique design. It boasts an electrical test switch and current limiting device. This makes it suitable for applications with heavy load currents. It also features a modified type NF 6.3 OF class 10 ceramic body which ensures that thermal insulation is efficiently supported. This ceramic body is engineered to securely contain the fuse in place, allowing the BK/HTB-66-R to be used for a wide range of applications.The working principle of the BK/HTB-66-R is quite simple. The fuseholder clip is designed to hold the fuse in position when it is connected. When a fault occurs in the circuit, the fuse will overheat and eventually trigger the thermal and electrical protection. When the thermal protection is triggered, the heat will cause the fuse to expand, disconnecting the circuit and preventing the overload. If the circuit requires testing, the test switch can be used to momentarily disconnect the circuit for safety. This allows for the quick diagnosis and repairs of the circuit if required.

Conclusion
The BK/HTB-66-R is a powerful and reliable fuseholder that can be used for a wide range of applications. Its superior design ensures the circuit is protected from overloads and tests can be safely conducted when required. The BK/HTB-66-R is a great choice for any industrial automation and control, dry contact switching, and low-voltage industrial distribution applications.

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Part Number	Manufacturer	Price	Quantity	Description