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ABB QHFT201 Terminal Block  

1. Key Parameters

• Product Model: QHFT201
• Product Series: ABB Industrial High-Density Terminal Blocks (Signal/Power Wiring Termination)
• Core Function: Provides 24 independent terminal channels for signal/power termination; supports digital (dry contact/NPN/PNP) and analog (4-20mA/0-10V) signals, plus low-voltage power (24V DC/230V AC); features screw-clamp termination for secure wire retention; enables DIN rail mounting; ensures vibration-resistant, corrosion-free connections for ABB automation systems; simplifies wiring inspection and maintenance via color-coded labels
• Electrical & Wiring Specifications:

  Parameter	Details	Performance Metrics
  Terminal Configuration	- Channel Count: 24 independent terminals (dual-row layout: 12 upper + 12 lower) - Wire Compatibility: Solid/stranded copper wires (18AWG~12AWG / 0.75mm²~4mm²) - Rated Voltage: 600V AC/DC (max) - Rated Current: 20A per terminal; 15A per row (balanced load) - Insulation Resistance: ≥100MΩ (500V DC, between terminals) - Dielectric Strength: 2.5kVrms (1min, between adjacent terminals)	24-channel dual-row design saves 50% cabinet space vs. single-row terminal blocks; 20A current rating supports low-voltage power transmission (e.g., 24V DC for sensors) and signal wiring (e.g., 4-20mA analog signals); broad wire compatibility eliminates the need for adapter terminals for different wire gauges
  Termination Mechanism	- Clamp Type: Screw-clamp with stainless steel screws (M3.5) - Torque Range: 0.8~1.2 N·m (optimal wire retention) - Vibration Resistance: ≤0.1mm wire displacement under 10~500Hz, 2g vibration (IEC 60068-2-6) - Wire Retention Force: ≥50N (per terminal, for 16AWG wire)	Stainless steel screws resist corrosion (critical for damp environments); precise torque range ensures secure connections without wire damage; vibration resistance prevents terminal loosening in dynamic applications (e.g., near conveyors or turbines), avoiding signal dropout

• Mechanical & Environmental Specifications:

  Parameter	Details	Performance Metrics
  Mechanical Design	- Dimensions: 100mm (W) × 60mm (H) × 30mm (D) - Mounting Type: DIN rail mount (EN 50022, 35mm, snap-on with anti-slip latch) - Housing Material: Flame-retardant polyamide 6.6 (PA66) with glass fiber reinforcement (UL 94 V0) - Terminal Material: Tin-plated copper (anti-corrosion, low contact resistance) - Labeling: Pre-printed numerical labels (1~24) + blank label slots for custom marking; color-coded terminal bases (blue = signal, red = power)	PA66 housing with glass fiber reinforcement withstands mechanical impacts (e.g., tool drops); tin-plated copper terminals reduce contact resistance (<5mΩ) for stable signal transmission; color-coding + numerical labels eliminate wiring errors during installation/maintenance
  Environmental Ratings	- Operating Temperature Range: -40℃~+120℃ (-40℉~248℉) - Storage Temperature Range: -55℃~+150℃ (-67℉~302℉) - Humidity Tolerance: 5%~95% RH (non-condensing/condensing, up to 85℃) - Corrosion Resistance: Passes 1000h salt spray test (IEC 60068-2-11) - EMC Compliance: EN 61000-6-2 (immunity: Level 3); EN 61000-6-3 (emission: Class B)	-40℃~+120℃ range suits extreme environments (arctic substations, high-temperature process areas); salt spray resistance supports coastal/ offshore applications (e.g., marine renewable energy); condensing humidity tolerance eliminates dehumidifiers in damp pump stations

• Compliance Specifications:

  Parameter	Details	Performance Metrics
  Safety & Compliance	- Safety Standards: CE, UL 1059, CSA C22.2 No.158, IEC 60947-7-1 (terminal blocks) - Flame Retardancy: Housing (UL 94 V0); insulation (UL 94 V0) - RoHS Compliance: EU RoHS 2.0 (Restriction of Hazardous Substances)	UL 1059/CSA certification ensures compliance with North American electrical safety requirements; IEC 60947-7-1 validation confirms compatibility with industrial control systems; flame-retardant design reduces fire risk in dense cabinet configurations

2. Core Features

• 24-Channel High-Density Design: Dual-row (12+12) terminal layout delivers 24 connections in a compact 100×60×30mm form factor—saves 50% cabinet space vs. single-row blocks; ideal for high-density ABB PLC/DCS cabinets (e.g., AC500 racks with multiple I/O modules) where space is critical.
• Secure Screw-Clamp Termination: Stainless steel M3.5 screws + 0.8~1.2N·m torque range—ensures tight, vibration-resistant connections (≤0.1mm wire displacement under 2g vibration); prevents "cold solder" effects from loose terminals, which cause intermittent signal loss in industrial environments.
• Dual-Compatible for Signal & Power: 600V AC/DC voltage + 20A current rating—handles both low-voltage power (24V DC for sensors, 230V AC for small actuators) and signal wiring (digital dry contact, 4-20mA analog); eliminates the need for separate power and signal terminal blocks, simplifying cabinet design.
• Industrial-Grade Durability: PA66 glass fiber housing + tin-plated copper terminals—withstands mechanical impacts (e.g., accidental tool contact) and corrosion (1000h salt spray); -40℃~+120℃ operating range suits extreme temperatures (e.g., foundry process areas, outdoor substations), extending service life to 15+ years.
• Error-Proof Labeling & Color-Coding: Pre-printed numerical labels (1~24) + color-coded bases (blue = signal, red = power)—eliminates wiring cross-connections during installation; blank label slots allow custom marking (e.g., "IN1-Pressure Sensor") for easy maintenance, reducing troubleshooting time by 40%.
• Seamless ABB Integration: DIN rail mounting aligns with ABB AC500/800xA cabinet layouts; terminal spacing (5mm pitch) matches ABB I/O module wire outlets; compatible with ABB wiring accessories (e.g., wire markers, terminal covers); ensures plug-and-play integration into ABB automation systems.
• Wide Wire Compatibility: Accepts 18AWG~12AWG (0.75mm²~4mm²) solid/stranded copper wires—adapts to diverse field wiring (e.g., thin 20AWG sensor wires, thick 14AWG power wires); no need for adapter terminals, cutting material costs and installation time.

3. Application Fields

• Manufacturing Automation: PLC/DCS Wiring:
  • Automotive Assembly Lines: Terminates wiring for AC500 I/O modules—24 terminals handle 12 digital sensor signals (proximity switches) + 8 analog signals (pressure transducers) + 4 power connections (24V DC for actuators); color-coding (blue = signal, red = power) prevents cross-wiring; vibration resistance withstands conveyor motion, avoiding signal dropout.
  • Electronics SMT Factories: Consolidates wiring for reflow oven controls—24 terminals connect 16 temperature sensor signals (4-20mA) + 8 power wires (24V DC for oven fans); high-temperature tolerance (+120℃) withstands heat from oven proximity; tin-plated terminals resist solder flux corrosion.
• Process Control: Instrument Wiring:
  • Chemical Plants: Terminates signals for 800xA DCS instruments—24 terminals handle 10 flow sensor signals (4-20mA) + 6 level sensor signals (0-10V) + 8 power wires (24V DC for transmitters); salt spray resistance withstands chemical vapors; insulation resistance (≥100MΩ) ensures no signal leakage in humid reagent rooms.
  • Water Treatment Facilities: Consolidates pump station wiring—24 terminals connect 12 pump status signals (dry contact) + 6 valve control signals (digital output) + 6 power wires (24V DC for pumps); condensing humidity tolerance suits damp pump stations; anti-slip DIN rail latch prevents terminal block dislodgment during maintenance.
• Energy & Utilities: Substation Wiring:
  • Power Substations (220kV+): Terminates auxiliary system wiring—24 terminals handle 10 breaker position signals (dry contact) + 8 transformer temperature signals (4-20mA) + 6 power wires (24V DC for cooling fans); -40℃ low-temperature rating suits winter substation conditions; dielectric strength (2.5kVrms) blocks high-voltage interference.
  • Solar PV Plants (1GW+): Consolidates inverter wiring—24 terminals connect 16 string current signals (4-20mA) + 8 inverter control signals (digital output); UV-resistant PA66 housing withstands desert sunlight; high-current capacity (20A) supports 24V DC power distribution to inverter auxiliaries.
• Heavy Machinery: Equipment Wiring:
  • Mining Equipment: Terminates wiring for conveyor controls—24 terminals handle 12 emergency stop signals (dry contact) + 6 speed sensor signals (4-20mA) + 6 power wires (24V DC for brakes); mechanical durability (PA66 glass fiber housing) resists mine dust and impacts; vibration resistance prevents terminal loosening from conveyor motion.
  • Construction Machinery: Consolidates crane auxiliary wiring—24 terminals connect 8 limit switch signals (dry contact) + 6 load sensor signals (4-20mA) + 10 power wires (24V DC for winch controls); wide temperature range (-40℃~+120℃) suits outdoor construction sites; screw-clamp termination ensures secure connections in dusty environments.

The structure and details of the product：

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