Technical Specifications:

• Number of Terminals: 12
• Rated Current per Terminal: 16 A
• Rated Voltage: 250 V AC / DC
• Wire Cross Section: 0.5 mm² to 2.5 mm² (solid), 0.5 mm² to 4 mm² (stranded with ferrule)
• Screw Torque: 0.8 Nm (recommended)
• Wire Stripping Length: 10 mm
• Isolation Voltage: 500 V DC (between terminals)
• Pollution Degree: 2 (per IEC 60664)
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -25°C to +70°C
• Dimensions (W x H x D): 44 mm x 90 mm x 115 mm
• Weight: Approx. 0.12 kg
• Mounting: DIN rail TS 35 (EN 60715)

Functional Features:

• 12 individual screw-clamp terminals for field wiring
• Clear terminal numbering for easy identification
• Color-coded terminal marks (white label with black numbering)
• DIN rail clip for secure mounting
• Tool-free connection via standard screwdriver (1.5 mm slot)
• Pre-wired bridge connections available for common signal grouping

Performance Parameters:

• Contact Resistance: < 3 mΩ (initial)
• Contact Resistance (after life test): < 5 mΩ
• Mechanical Life: > 100 operations (screw/unscrew cycles)
• Electrical Life: > 10,000 operations (at rated load)
• Vibration Resistance: 5 g (per IEC 60068-2-6)
• Shock Resistance: 15 g (per IEC 60068-2-27)

Material Composition:

• Housing: Flame-retardant PA66 (polyamide 6.6) with glass fiber reinforcement, UL 94 V-0 rated
• Terminal Screws: Zinc-plated steel, corrosion-resistant
• Terminal Contacts: Tin-plated copper alloy (CuSn6) for reliable conductivity
• Label Strip: Polycarbonate (PC), UV-resistant, printable
• DIN Rail Clip: Spring steel, tin-plated

Structural Features:

• Standard X20 module width: 44 mm
• Front-facing bus connector for X20 system connection
• Screw terminals arranged in a single row on the front face
• Label strip on top for terminal identification
• Snap-in DIN rail mounting with locking mechanism

Working Principle:
The X20TB12 serves as a passive wiring distribution point. Field devices are connected to the screw terminals, and the electrical signals are routed through the terminal block to the corresponding X20 I/O module via the X20 bus connector on the rear of the module. There is no active electronics in this module; it purely provides a mechanical and electrical interface between field wiring and the X20 system. The screw-clamp mechanism ensures a gas-tight connection that resists vibration and thermal cycling.

Advantages & Highlights:

• Simple, reliable passive connection with no electronics to fail
• 16 A rated current handles most standard field device loads
• Clear labeling reduces wiring errors during installation and maintenance
• DIN rail mounting integrates seamlessly with X20 system
• Wide wire acceptance range (0.5–4 mm²) accommodates various cable types
• UL 94 V-0 flame-retardant housing for safety compliance

Applicable Industries:

• Machine building (general purpose)
• Packaging machinery
• Conveyor systems
• Material handling equipment
• Textile machinery
• Woodworking machines

Installation Requirements:

• Mount on DIN rail TS 35 (EN 60715)
• Connect to X20 bus via rear-facing bus connector
• Use wire ferrules for stranded conductors (≥ 0.5 mm²)
• Strip wire to exactly 10 mm for optimal connection
• Torque screws to 0.8 Nm using 1.5 mm flathead screwdriver
• Group signals logically on the terminal block (e.g., all 24 V on one side, all signals on the other)

Usage Precautions:

• Do not exceed 16 A per terminal under any condition
• Do not mix solid and stranded wires on the same terminal
• Always use wire ferrules for stranded conductors to prevent fraying
• Do not overtighten screws (max 0.8 Nm) to avoid damaging terminal threads
• Verify all connections before applying power to the system
• Do not use in environments exceeding +55°C ambient temperature