In industrial automation, PLC control cabinets, power distribution boxes and new energy equipment, standardized modular wiring is the core guarantee for neat layout, easy maintenance and long-term circuit stability. The UK series DIN rail terminal block is the classic universal screw-type wiring terminal adopted worldwide, with mature modular design, complete matching accessories and stable electrical performance, becoming the mainstream wiring solution for low-voltage control systems.
What Are UK Series DIN Rail Terminal Blocks?
UK series is a universal modular screw terminal block specially designed for standard NS35/7.5, NS35/15 and NS32 DIN mounting rails. The “UK” stands for universal feed-through screw terminal, covering complete specifications from UK1.5N, UK2.5B, UK3N, UK5N, UK10N up to UK35N.
Main mainstream sub-types of UK terminal blocks:
- Feed-through standard terminals: Basic two-way inlet/outlet wiring for ordinary power & signal circuits;
- PE grounding terminals (USLKG): Green-yellow conductive part for equipment protective earthing;
- Double-layer twin terminals: Two independent wiring layers to save cabinet installation space;
- Disconnect test terminals (URTK-S): Sliding knife structure for safe CT loop testing & circuit cut-off;
- High-current heavy-duty terminals: For high-power distribution wiring up to 35mm² wire gauge.
Every single pole can be freely spliced and combined on DIN rails, matched with supporting accessories including D-UK end covers, F terminal fixed stoppers, jumper bars and marking tags to form a complete ordered terminal row layout.
Core Advantages Of UK Series DIN Rail Terminal Blocks
1. Universal DIN Rail Snap-On Installation, High Space Utilization
The bottom buckle structure of each UK DIN rail terminal block supports direct snap locking on all global standard 35mm C/G-type DIN rails without extra adapters. Single poles can be freely added or removed according to circuit quantity, and multiple rows can be arranged side by side to maximize limited cabinet internal space, ideal for compact PLC control enclosures.
2. Reliable Screw Clamp Structure, Anti-Vibration Stable Connection
Adopt thickened nickel-plated pure copper conductive pressure plates and high-strength carbon steel anti-loose screws. Uniform clamping force tightly locks solid and stranded wires, effectively avoiding loose contact caused by long-term vibration of motors, compressors and production lines. The closed screw guide hole prevents screws from falling off during disassembly, greatly reducing hidden electrical faults during equipment operation.
3. UL94-V0 Flame Retardant PA66 Insulating Housing
The terminal shell is injection molded with high-toughness PA66 nylon reaching UL94-V0 flame retardant grade, with operating temperature range of -40℃ ~ +105℃. Excellent insulation, impact resistance and oil mist corrosion resistance adapt to harsh industrial environments such as workshops, outdoor power cabinets and new energy equipment stations. Independent barrier partitions between poles eliminate short-circuit risks from adjacent live wires.
4. Complete Matching Accessory Ecosystem For Standardized Wiring
A full set of dedicated supporting accessories perfectly match all UK series terminals to realize standardized cabinet wiring management:
- D-UK end cover baffle: Seal both sides of terminal rows for dust-proof, insulation and anti-shock protection;
- TBR-F fixed stopper: Lock spliced terminals on DIN rails to prevent sliding displacement;
- Center jumpers & side jumpers: Fast parallel connection of multi-circuit equal potential without extra wires;
- Number marking tags: Print circuit serial numbers for clear classification and quick maintenance.
5. Full Specifications Cover All Low-Voltage Wiring Scenarios
Our complete UK series terminal blocks cover diversified wiring demands from weak signal to high-current power distribution:
- Wire cross-section range: 0.2 ~ 35mm² (AWG24 ~ AWG2);
- Rated current: 17.5A ~ 101A, rated voltage up to 800V IEC standard;
- Color classification: Standard gray main body, green-yellow for grounding terminals, custom blue/red available for circuit distinction.
Widely applied for automation production line control cabinets, elevator main control panels, inverter power cabinets, building distribution boxes, photovoltaic small control equipment and instrument secondary loop wiring.
6. Cost-Effective Mass Production Solution For Electrical Manufacturers
All UK series DIN rail terminal blocks strictly comply with IEC60947 international standards and pass RoHS, REACH, CE environmental certifications, fully meeting export inspection requirements for EU, Southeast Asia and North America markets. Stable precision injection molding and electroplating processes control product consistency, supporting small sample trial orders and large batch wholesale with sufficient spot stock for fast global delivery.
Standard Technical Parameters Of UK Series Terminal Blocks
- Standard Mount Rail: NS35/7.5, NS35/15, NS32 DIN rail
- Rated Voltage: Up to 800V AC (depends on model)
- Rated Current: 17.5A ~ 101A
- Applicable Wire: 0.2 ~ 35mm² solid & stranded copper wire
- Housing Material: UL94-V0 Flame Retardant PA66 Nylon
- Conductor Material: Thickened Nickel-Plated Pure Copper
- Connection Method: M3/M4 Screw Clamp Wiring
- Certification: CE, RoHS, REACH, IEC60947 Compliant
- Supporting Accessories: D-UK end cover, F stopper, jumper bar, marking label
Step-by-Step Installation & Wiring Guide
- Align the bottom buckle of single UK terminal with DIN rail and press down to complete snap-on fixing;
- Splice multiple terminals side by side according to circuit quantity, install TBR-F stoppers at both ends to lock the whole row;
- Strip wire insulation to 8–10mm, insert clean copper core into the terminal wiring cavity;
- Tighten the built-in screw clockwise with a flat screwdriver to clamp the wire tightly;
- Install D-UK end baffles on two outermost terminals for dust insulation, attach number tags for circuit identification;
- For equal potential connection, insert matched jumpers into the terminal top jacks to realize fast parallel wiring.
Why Choose Our UK Series DIN Rail Terminal Blocks?
We are a professional terminal manufacturer integrating stamping, injection molding and electroplating production lines. All our UK DIN rail terminal blocks adopt thicker copper conductive inserts and heavier nickel plating layers than low-cost generic products on the market, greatly extending anti-oxidation service life under continuous full-load operation.
Precision mold injection ensures no plastic burrs, clear model marking on the shell for fast engineer model selection. We support custom terminal colors, printed logo and mixed-spec bulk packaging, and provide one-stop matching of complete wiring accessories including end covers, stoppers and jumpers to reduce customers’ multi-supplier procurement costs.
Final Summary
UK series DIN rail terminal block is the most widely recognized modular screw wiring connector for global industrial low-voltage control cabinets. Featuring universal DIN rail snap installation, anti-vibration screw clamp connection, flame retardant safe insulation and a complete supporting accessory system, these modular terminals realize neat, standardized and maintainable cabinet wiring. Equipping control panels with standard UK series terminal blocks effectively reduces circuit failure risks, improves electrician maintenance efficiency and optimizes overall manufacturing costs for electrical equipment factories.
Keywords: UK Series DIN Rail Terminal Block, UK Modular Screw Terminal, DIN Rail Wiring Terminal, D-UK End Cover, Industrial Control Cabinet Terminal Block