WAGO Rail-Mount Terminal Blocks

WAGO Rail-Mount Terminal Blocks 

Product Core Basic Information

1. Core positioning and applicable scenarios

Application areas: industrial control, electrical equipment wiring, lighting systems, motor wiring, marine equipment, explosion-proof scenarios (some models), etc.

Installation method: Mainstream compatible with 35mm DIN rail, some support 15mm DIN rail or panel screw/buckle installation.

Suitable conductors: Copper and aluminum conductors (aluminum conductors need to be coated with "Alu Plus" contact paste to remove the oxide layer), with a cross-sectional range of 0.08-35mm ² (28-2 AWG).

General technical characteristics:

Connection technology: CAGE CLAMP ®  Cage spring crimping (requires tools) Push-in CAGE CLAMP ®  Direct insertion (tool free, compatible with solid/multi stranded conductors with cold pressed ends).

Electrical parameters: rated voltage 400V-1000V, rated current 6A-125A, pollution level 2-3, rated surge voltage 4kV-8kV.

Material safety: The insulation material is PA66/PPA/PC, the flame retardant grade is UL94 V0, the contact material is electrolytic copper+tin plating, and the spring is austenitic chromium nickel steel (corrosion-resistant and fatigue resistant).

2. Compliance and Certification

International standards: comply with IEC/EN 60947, UL 1059, CSA C22.2 and other standards.

Special certification: Some models have passed ATEX (Ex i Explosion proof), DNV (Marine Equipment), LR (Classification Society) certifications, meeting the requirements for use in hazardous environments and marine scenarios.

Detailed analysis of core product series

1. Classic rail mounted terminal block (279/280/281/282/283/284/285 series)

Series positioning: The main series of industrial cabling, covering all scenario requirements from ordinary signals to power circuits.

Key parameters and characteristics of each series:

Series conductor cross-sectional range, core type, key characteristics, electrical specifications (typical), application scenarios

279 series 0.08-1.5mm ² straight/grounded/shielded/double-layer terminal block 2-4 conductor design, compact size, supports Ex i explosion-proof rated voltage 800V, rated current 18A signal circuit, control wiring

280 series 0.08-2.5mm ² straight through/grounded/shielded/double-layer/three-layer terminal block with multiple colors to choose from, with test slots, compatible with sensor/actuator wiring rated voltage 800V, rated current 24A industrial control, lighting system

281 series 0.08-4mm ² through/ground/fuse/isolation switch terminal block with rotatable fuse holder, some with LED fuse indication rated voltage 800V, rated current 10-26A, control circuit requiring overload protection

282 series 0.2-6mm ² isolation switch/test/fuse terminal block supports online testing, with locking function, anti misoperation rated voltage 630V, rated current 41A industrial equipment maintenance circuit, power branch

283 series 0.2-16mm ² high current through/ground terminal block compatible with medium power power circuits, supporting step-down jumpers, common potential rated voltage 800V, rated current 76A, motor control, power distribution

284 series 0.2-10mm ² high current through/fuse terminal block with fuse holder, supporting 35mm ² conductor distribution rated voltage 800V, rated current 57A, power circuit overload protection

285 series 6-35mm ² ultra-high current terminal block is suitable for heavy-duty power circuits, with copper bars connected to industrial power supply main lines and high-power equipment with a rated voltage of 1000V and a rated current of 125A

Detailed explanation of special types:

Fused terminal block: compatible with glass fuses of 5x20/25/30mm, 1/4 "x1" and other specifications. Some models come with LED or neon light fuse indication and support quick replacement of fuses (one end automatically pops out when the cover is opened).

Double/triple layer terminal block: The upper and lower layers are designed to be independent or have a common potential, saving rail space and adapting to motor L1/L2/L3/GND multi potential wiring.

Isolation switch terminal block: equipped with sliding isolation switch, supporting circuit power-off maintenance, and some with locking function to prevent accidental closing.

2. Pluggable connector terminal block (X-COM) ®- SYSTEM， 769/870 series)

Series positioning: For scenarios that require frequent maintenance and quick plugging, supporting modular combination.

Core product type:

Carrier terminal block (769 series): 1-4 pole design, including through/isolation switch/diode/LED types, compatible with 0.08-4mm ² conductors, rated current 16-32A, supports coding error prevention (16 coding combinations).

Double layer carrier terminal block (870 series): 2-4 pole double-layer design, supports L/N/GND multi potential distribution, compatible with 0.08-2.5mm ² conductors, rated current 16A.

Supporting plug: 1-15 pole straight/curved plug, with strain relief board, locking lever, protective cable pulling, supporting multiple plugs with common potential.

Core advantage: The plug and terminal block can be quickly separated, and there is no need to disconnect the wires during maintenance; Encode the key to prevent accidental insertion and improve wiring accuracy.

3. Matrix wiring system (726/727 series)

Series positioning: 19 inch rack specific, suitable for complex signal cross connection and centralized wiring of multiple devices.

Product type and characteristics:

Matrix terminal block (726 series): 32-80 pole design, supporting vertical identification, with common potential distribution module, compatible with 0.08-16mm ² conductors, rated current 10-76A.

Multilayer matrix terminal strip (727 series): 4-8 layer design, the same module supports independent connection of multiple groups of signals, adapts to 0.08-1.5mm ² conductors, and rated current is 12-18A.

Application scenarios: centralized wiring in data centers, industrial control cabinets, and signal distribution for large equipment.

4. Micro rail mounted terminal block (260/261/262/264 series)

Series positioning: Specialized for small spaces, such as internal wiring of small equipment and instruments.

Key features of each series:

260 series (0.08-1.5mm ²): 2-4 conductor design, supports panel installation, rated voltage 400V, rated current 18A.

261 series (0.08-2.5mm ²): with press on wiring, compatible with solid conductor direct insertion, rated voltage 500V, rated current 24A.

262 series (0.08-4mm ²): High current micro terminals, supporting power branching, rated voltage 630V, rated current 24A.

264 series (0.08-2.5mm ²): compatible with DIN-15/35 rails, with quick installation feet, rated voltage 800V, rated current 24A.

Core advantages: With a width of only 5-10mm, it saves installation space and supports Mini WSB micro marking system.

5. Panel installation terminal block (862/294 series)

Series positioning: Dedicated for equipment panels and enclosures, directly fixed to the panel rather than the guide rail.

862 series:

Conductor cross-section: 0.5-4mm ², 4-5 pole design, supports screw/snap fit installation, with grounding contact option.

Features: Automatic penetration of panel paint surface for grounding, supports 4 conductors/poles, adapts to internal wiring of equipment, rated voltage 500V, rated current 32A.

294 series (for lighting/electrical equipment):

Conductor cross-section: 0.5-2.5mm ², 2-5 pole design, supports PUSH WIRE ®  Direct insertion technology.

Regional adaptation: Compliant with wiring standards of the European Union, the United States, and Japan, with multiple grounding methods (direct connection/screw/buckle), rated voltage of 500V, and rated current of 24A.

Application scenarios: wiring of lighting fixtures, household appliances, and building electrical wiring.

Special analysis of functional terminal block

1. Fused terminal block (281/282/284/811 series)

Core function: Integrated overload/short circuit protection, no additional fuse holder required.

Key specifications:

Fuse adaptation: 5x20/25/30mm glass fuse, 1/4 "x1" cartridge fuse, automotive plug-in fuse.

Indication method: Some models are equipped with LED (24V/120V/230V) or neon light fuse indication to quickly locate the faulty circuit.

Special model: 811 series suitable for photovoltaic scenarios, rated voltage 1000VDC, rated current 32A, supports 1-3 pole design.

2. Sensor/actuator terminal block (derived from 280 series)

Specially designed for sensor (PNP/NPN) and actuator wiring, with power distribution function.

Features:

Supports positive and negative pole distribution of power supply, with LED power indicator, low power consumption (4.8mA).

Partially equipped with shielded connections and grounding terminals, resistant to electromagnetic interference, suitable for industrial site wiring.

Wiring method: CAGE CLAMP ®  Crimp connection, supports 0.08-2.5mm ² conductors, rated current 15-20A.

Key accessories and auxiliary products

1. Connection and common potential accessories

Jumper type:

Adjacent jumper: Suitable for terminal blocks of the same series with common potential, 2-12 poles optional, rated current 16-63A.

Interlocking jumper: supports non adjacent terminal blocks sharing the same potential, meeting the requirements of complex circuit design.

Voltage reducing jumper: Achieve common potential for different cross-sectional terminal blocks (such as 35mm ² and 4mm ²), such as 283-414 (16mm ² to 4mm ²).

Push in jumper: Insulated design, plug and play, rated current 30A.

2. Identification and protective accessories

Identification system:

WMB series: compatible with smart printers, packaged in 1500 pieces, can stretch 5-5.2mm, available in multiple colors (yellow/gray/green/purple, etc.).

Mini WSB series: Miniature markers, compatible with miniature terminal blocks, supporting snap on installation.

Protective accessories:

Finger protection cover: Seal unused conductor entrances to prevent electric shock.

Insulation blocking: isolates adjacent terminals, prevents short circuits, and is compatible with double-layer/three-layer terminal blocks.

Warning sign: Insert into the operating slot to indicate high voltage/hazardous circuits.

3. Testing and installing accessories

Test accessories:

Test plug: 6mm/4mm wide, compatible with test slot, rated current of 24A, supports live testing.

Test plug adapter: 5mm wide, compatible with different terminal block test interfaces.

Installation accessories:

End plate/middle plate: 2-4mm thick, used for end sealing of terminal block groups to enhance mechanical stability.

DIN rail: 210 series, 35x7.5/15mm specification, steel/copper material, galvanized treatment, corrosion-resistant.

Snap on mounting feet: 209-123 series, suitable for panel installation, with a spacing of 35-40mm.

Installation and wiring operation specifications

1. Key requirements for wiring

Conductor processing:

Stripping length: 8-23mm (depending on the series, such as micro terminal block 8-9mm, high current terminal block 16-23mm).

Multi strand conductor: Cold pressed terminals (216 series) are required, otherwise one size larger terminal block should be selected.

Aluminum conductor: After cleaning the surface oxide layer, apply "Alu Plus" contact paste to prevent oxidation and electrolytic corrosion.

Wiring steps:

CAGE CLAMP ®： Insert the tool into the rectangular opening → Open the fixture → Insert the conductor → Pull out the tool lock.

Push-in CAGE CLAMP ®： Solid/multi stranded conductors with ends inserted directly; Other conductors need to be inserted with tools tilted into the opening and unlocked before insertion.

2. Installation precautions

Spacing requirement: Reserve 20mm on both sides of the terminal block group, and reserve 35-65mm above and below to ensure heat dissipation.

Grounding requirements: In hazardous voltage scenarios, DIN rails must be grounded (PE) to ensure electrical safety.

Explosion proof scenario: Select Ex i certified models and reserve creepage distance as required (e.g. 4 distance modules need to be connected after Ex i module).

Typical application scenarios and configuration schemes

1. Industrial control circuit

Configuration: 280 series straight through terminal block+281 series fused terminal block+769 series pluggable terminal block.

Advantages: Control circuit overload protection, quick insertion and removal during maintenance, signal and power partition wiring.

2. Motor wiring

Configuration: 283 series high current terminal block+281 series double-layer terminal block+grounding terminal block (green and yellow).

Advantages: L1/L2/L3/GND multi potential distribution, saving rail space, and adapting to motor power and control circuits.

3. Wiring of marine equipment

Configuration: 282 series isolation switch terminal block+726 series matrix terminal block+DNV certified end board.

Advantages: Resistant to salt spray corrosion, supports circuit isolation maintenance, and meets marine compliance requirements.

4. Explosion proof scenario wiring

Configuration: 279/280 series Ex i certified terminal block+distance module (750-616)+explosion-proof fuse.

Advantages: Meets ATEX certification, prevents electric sparks from igniting hazardous gases, and is suitable for Zone 2/22 hazardous areas.

Summary of Product Core Advantages

Modular design: supports free combination, universal terminal blocks and accessories, reducing inventory costs.

Efficient wiring: Push in technology requires no tools, CAGE CLAMP ®  Reliable crimping, anti vibration, maintenance free.

Full coverage of scenarios: from signals to power, from ordinary to explosion-proof/marine scenarios, suitable for all industrial needs.

Safety compliance: Through multiple international certifications, complete protective measures (anti electric shock, anti misoperation, anti short circuit).