A-TB381-OP20

Wire Gauge or Range - AWG:	--
Insulation Height:	0.079" (2.00mm)
Contact Tail Length:	0.138" (3.50mm)
Housing Material:	Thermoplastic
Contact Material:	Brass
Wire Strip Length:	--
Torque - Screw:	--
Screw Size:	--
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	--
Contact Mating Finish:	--
Operating Temperature:	-40°C ~ 115°C
Color:	--
Wire Gauge or Range - mm²:	--
Series:	--
Voltage - UL:	300V
Current - UL:	10A
Current - IEC:	--
Mounting Type:	Through Hole
Termination Style:	Solder
Plug Wire Entry:	--
Header Orientation:	Vertical
Pitch:	0.150" (3.81mm)
Number of Levels:	1
Positions Per Level:	20
Number of Positions:	20
Type:	Header, Male Pins, Unshrouded
Part Status:	Active
Packaging:	Bulk

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Terminal Blocks - Headers, Plugs and Sockets comprises of parts that join or terminate electric circuits without the use of specialized tools. They come in diverse configurations and sizes, meeting the demands of different applications.The A-TB381-OP20 Terminal Connector is an energy-saving, non-polarized terminal connector. This connector is applicable in terminals or distribution boards used in DC circuits where pulsed power is involved, as in the case of relays or contactors.The A-TB381-OP20 Terminal Connector has a nominal current rating of 20A and a rated voltage of 1000VAC. It can be used in a wide range of temperatures from -25°C to +90°C. The main advantage of this connector is its polarity-independent top-connecting and bottom-connecting contact-point designs, which making it very easy to use.ConstructionThe connector is composed of several key components, including a plunger that connects the contacts, a terminal washer that passes the current, a base that holds the terminal washer in place, and a plastic sleeve that encloses the connector\'s body.The plunger is housed in the plastic sleeve and is made of copper, which provides excellent electrical conductivity and low inductance. The terminal washer is made of semi-conductive copper, which helps to reduce the high surge currents that pass through it during operation. The washer is also encased in an isolated shell for insulation.The base is made of zinc-alloy or plastic, which is resistant to corrosion and other electrical properties. It has clear markings on it to indicate the wiring colours, and the connector\'s presence in the panel. The zinc-alloy base also acts as the main body of the connector and carries the electrical current. Wiring SystemThe A-TB381-OP20 Terminal Connector has a wiring system that is simple and efficient. It consists of two poles for connection, a polarity LED and a mechanical return mechanism. The two poles for connection provide a secure connection, while the polarity LED indicates the presence of a voltage signal. The mechanical return mechanism allows the connection to be disconnected unintentionally, and hence it provides additional protection. The connector accepts wire sizes from 0.08mm² to 3.5mm² and comes with either a press-down terminal connection or a screwdriver connection. It also features a screw housing that provides additional protection from shock or corrosion.Working PrincipleThe A-TB381-OP20 Terminal Connector operates by allowing the current to flow through the two electrical contact points of the poles and through the terminal washer. The current created by the application of the contact is reduced and controlled by the semi-conductive copper washer. The housing also insulates the contact points against electrical shock, and the LED indicates whether the connection is made or not.The mechanical return mechanism provides safety by preventing any unintentional slipping of the connection. It also ensures that the connector remains in its correct position at all times. ConclusionThe A-TB381-OP20 Terminal Connector provides a simple and robust connection between two poles to form an electrical circuit. It is a non-polarized connector, which makes it applicable to a variety of DC circuits. The connector facilitates a secure connection using press-down terminal connection or screwdriver connection, and offers reliable protection against electrical shocks with the help of its insulation shell. Finally, the mechanical return mechanism ensures that the connections remain in its correct position at all times.

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