German Haug plug Haug model Haug price

Haug plugs are accessory products used to achieve electrical connections and are categorized as connectors in industry. As industrial automation levels rise and industrial control requirements become stricter and more precise, the usage of terminal blocks is gradually increasing. With the development of the electronics industry, the scope of terminal block applications is expanding, and the variety is growing. Besides PCB board terminals, the most widely used types include hardware terminals, nut terminals, spring terminals, and more. Terminal blocks are applied to facilitate wire connections; they are essentially metal strips enclosed in insulating plastic, with holes at both ends for inserting wires and screws for tightening or loosening. For example, two wires may need to be connected at times and disconnected at others; terminals allow them to be connected and disconnected at any time without welding or twisting, which is convenient and fast. They are also suitable for interconnecting large numbers of wires. In the power industry, there are dedicated terminal strips and terminal boxes filled with terminal blocks, including single-layer, double-layer, current, voltage, standard, and disconnectable types. A specific crimping area ensures reliable contact and the ability to carry sufficient current.

Haug plug classification

Terminal blocks can be classified into European-style terminal block series, pluggable terminal block series, transformer terminal blocks, building wiring terminals, barrier-type terminal block series, spring-type terminal block series, DIN rail terminal block series, feed-through terminal block series, and optocoupler terminal blocks. Pluggable types consist of two parts: one part clamps the wire and plugs into the other part, which is soldered onto the PCB board. The mechanical principle at the bottom and the anti-vibration design ensure long-term airtight connection and product reliability. Mounting ears can be added to both ends of the socket; these largely protect the contacts and prevent poor alignment, while ensuring the socket inserts correctly into the housing. Sockets may also have mounting clips and locking clips. Mounting clips provide more secure fixation to the PCB board, and locking clips secure the housing and socket after installation. Various socket designs accommodate different insertion methods into the housing, such as horizontal, vertical, or angled orientation to the printed circuit board, allowing selection based on customer requirements. Both metric and standard wire gauges can be selected, making this the best-selling terminal type on the market. Barrier-type terminals enable safe, reliable, and effective connections, especially in high-current and high-voltage environments. Spring-type terminals are new terminal blocks using spring devices, widely used in global electrical and electronic engineering industries: lighting, elevator control, instruments, power supplies, chemical, and automotive power. DIN rail mounting adopts reliable screw connection technology, electronic fuse technology, and the latest electrical connection technology, widely used in power electronics, communications, electrical control, and power supplies. DIN rail types use wire clamping and unique self-locking screw designs for reliable and safe connections. This series features an attractive appearance and supports various accessories such as short-circuit links, marker strips, and partitions. Feed-through types use screw connection technology; the insulation material is PA66 (flammability rating: UL94, V-0), and the connectors use high-quality highly conductive metal materials.

Haug plug features

Utilizing existing DIN rail terminal block frame screw connection technology and adding circuits composed of electronic components, optoelectronic transmission coupling is achieved. The core of automatic control requires the control unit to be reliably isolated from sensors and actuators to avoid interference. Sanmenwan WUKG2 opto-isolation terminals effectively perform this function, ensuring field signals match the low voltage required by electronic control devices. They can also serve as interface elements between peripheral equipment for process control and control, signal, and regulator devices, suitable for different voltage and power ranges. Opto-isolation terminals offer advantages such as low signal loss at the control end, high switching frequency, no mechanical contact bounce, wear-free switching, high insulation voltage, resistance to vibration, independence from position, and long service life, leading to wide application in the field of automatic control.

Haug plug wiring methods

1) Apply moderate force when tightening wired connections to prevent stripping the threads of bolts and nuts due to excessive force. Replace any stripped bolts and nuts immediately; do not continue using them. 2) When tightening or loosening screws with a screwdriver, apply firm pressure to keep the screwdriver engaged with the screw head before turning to prevent slipping, which can damage the screw and make disassembly difficult, especially for common circuit breakers in distribution boxes. 3) If bolts or nuts are difficult to remove, do not act rashly to prevent deformation that makes removal harder. Tap appropriately or apply screw loosening agents or dilute hydrochloric acid, then attempt removal after a short wait. 4) Do not use pliers to tighten or loosen bolts and nuts to prevent damage. When using an adjustable wrench, adjust the jaw opening properly to prevent damaging or deforming the bolts and nuts, which would make disassembly difficult. 5) Each terminal block allows a maximum of two wires of the same type and specification. 6) For terminal blocks prone to loosening or poor contact, wire ends must be secured in a "U" shape on the terminal block to increase contact area and prevent loosening. 7) When connecting wire joints or lugs, do not install non-copper or poorly conductive washers in between. 8) When connecting wire joints, ensure contact surfaces are smooth and free of oxidation. When connecting lugs or copper bars, apply conductive paste to the cleaned contact surface before tightening. 9) When connecting temporary lines, single-strand flexible wires should be folded once at the end before connecting to the lower terminal of the circuit breaker; single-core solid wires should be connected in a "U" shape to the lower terminal of the circuit breaker. 10) For motor wiring of 30KW and above, do not use poorly conductive washers such as galvanized nuts, flat washers, or spring washers between the motor output leads and the connecting cable wires. 11) When wrapping cables or other equipment requiring insulation protection with insulating tape, wrap from one end to the other with a 1/2 overlap ratio, going back and forth at least once.

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