ABB 347543 (115VAC Rated Input) Industrial Control Relay / Auxiliary Relay

• Mechanical & Environmental Ratings:
  • Operating temperature: -25°C – +70°C
  • Storage temperature: -40°C – +85°C
  • Relative humidity: 5% – 95% (non-condensing, no dew formation)
  • Protection class: IP40 (housing); IP20 (terminals, when mounted in control cabinets)
  • Vibration resistance: IEC 60068-2-6, 10–500 Hz, 0.15mm amplitude (operating); 0.3mm amplitude (non-operating)
  • Shock resistance: IEC 60068-2-27, 15g acceleration, 11ms duration (half-sine wave, non-operating)
  • Mechanical life: ≥10,000,000 operations
  • Electrical life: ≥100,000 operations (at rated load, AC-15)
• Physical Dimensions:
  • Length: 35mm
  • Width: 22.5mm
  • Height: 78mm
  • Mounting: DIN rail mounting (compatible with EN 60715 TH 35-7.5/15 standard rails)

Functional Features

• Dual-Frequency Compatibility: Supports 50Hz and 60Hz power grids, adapting to global industrial power supply standards without additional configuration.
• High Contact Reliability: AgNi alloy contacts minimize contact resistance (≤50mΩ initial) and resist arc erosion, ensuring long-term stable switching performance.
• Wide Temperature Tolerance: Operates reliably from -25°C to +70°C, suitable for cold storage, outdoor control cabinets, and high-temperature industrial areas (e.g., steel mills).
• Compact Design: Narrow width (22.5mm) saves space in control panels, allowing dense mounting of multiple relays for complex control circuits.
• Signal Isolation: Electrically isolates input (coil) and output (contacts) circuits, preventing high-voltage spikes or noise from damaging sensitive control components (e.g., PLCs).
• Easy Installation: DIN rail mounting enables tool-free installation and quick replacement, reducing maintenance time.

Application Scenarios

• Industrial Control Panels: Used in motor control centers (MCCs) to amplify PLC output signals and drive contactors for motor start/stop control.
• Process Automation: Integrated into chemical, pharmaceutical, and food processing lines to switch valves, pumps, or sensors based on process triggers (e.g., temperature, pressure).
• Building Automation: Applied in HVAC systems (heating, ventilation, air conditioning) to control fan motors, dampers, or compressor relays.
• Power Distribution Systems: Used in low-voltage switchgear to monitor circuit breakers or isolate fault signals for alarm systems.
• Machine Tools: Integrated into CNC machines, lathes, and milling equipment to switch coolant pumps, spindle drives, or safety interlocks.
• Transportation Infrastructure: Used in railway signaling systems or elevator control panels to relay safety signals (e.g., door lock status, emergency stops).