1557-3

Flange Diameter:	0.187" (4.75mm)
Insulation Color:	--
Material - Insulation:	--
Insulation:	Non-Insulated
Contact Finish Thickness:	--
Contact Finish:	Tin
Contact Material:	Brass
Board Thickness:	0.093" (2.36mm)
Mounting Hole Diameter:	0.154" (3.91mm)
Staking Side ID:	--
Staking Side OD:	0.150" (3.81mm)
Diameter - Turret Head:	--
Series:	--
Termination:	Staking Flare, Knurled
Mounting Type:	Through Hole
Length - Overall:	0.516" (13.11mm)
Length - Below Flange:	0.141" (3.58mm)
Length - Above Board:	0.375" (9.53mm)
Number of Turrets:	Single
Moisture Sensitivity Level (MSL):	--
Terminal Type:	Single End, Fork, Hollow
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Terminals - Turret Connectors - 1557-3 Application Field and Working Principle

The 1557-3 is a terminal, turret type connector, designed for electrical connections requiring low contact resistance and high current-carrying capacity. It is used mostly in medium and high-voltage power applications. Due to its robust design and advanced features, the 1557-3 is capable of operating in extreme environments.

Overview

The 1557-3 is a male-component type termination which is especially designed for making electrical connections. It is intended for voltage levels ranging from 600 to 35000 volts in alternating current circuits. The contact pins are made of high-grade brass, and plated with silver to ensure low contact resistance and to offer an increased current-carrying capacity. The connector is capable of withstanding temperatures ranging from -45°C to +105°C (with the exception of aluminum inserts).

Application Field

The 1557-3 is designed mainly for medium and high voltage power application, communication lines, signal systems, and various industrial applications. This connector offers low contact resistance, high current-carrying capacity, and its advanced features make it suitable for use in critical environments, such as those which involve exposure to extreme temperatures.

Working Principle

The basic working principle of the 1557-3 terminal, turret type connector is quite simple. The pin ends are inserted into the connector body and is secured in position. The connector body is then attached to an electrical device using screws. The connector ensures proper electrical contact between the pin ends and the electrical device being connected.When the connector is properly installed and intact, it provides a low resistance electrical connection with the electrical device. The pin assembly is capable of sustaining very high current, thus allowing reliable electrical power transmission without any risk of component failure due to overheating.

Safety Features

The 1557-3 terminal, turret type connector is designed with numerous safety features, such as insulation, water-resistant seals, lightning protection, and shock resistance. These features make the 1557-3 a more reliable and robust connector for use in hazardous environments. The connector is equipped with insulation to reduce the risk of electric shock from the high voltage currents. Additionally, the water-resistant seals protect the connector from corrosion and moisture-related damage. Furthermore, the connector provides lightning protection by effectively diverting the damaging lightning currents away from the electrical device. Finally, the connector is designed to be shock resistant, providing further protection from potentially damaging electric shocks.

Conclusion

The 1557-3 terminal, turret type connector is a reliable and robust connector that is capable of handling very high voltage and current levels. It is mainly used in high voltage power applications and other industrial applications, and offers low resistance electrical connection with the electrical device. Moreover, the connector is equipped with safety features, such as insulation, water-resistant seals, lightning protection, and shock resistance, making the 1557-3 suitable for use in hazardous environments.

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