DESCRIZIONE PRODOTTO
SCHNEIDER ELECTRIC 81821 - TeSys D Contactor
The SCHNEIDER ELECTRIC 81821 is an electromechanical TeSys D series contactor engineered for robust industrial motor control and resistive load switching applications. This 3-pole device features 3 normally open power contacts, actuated by a 24V DC control coil, providing reliable switching for AC-3 motor loads up to 9A at 440V and AC-1 resistive loads up to 25A. It is designed for integration into industrial control panels, HVAC systems, pumping stations, and general automation infrastructure requiring precise and durable power circuit management.
Technical Specifications:
- SERIES/FAMILY: TeSys D
- COMPONENT TYPE: Contactor
- ELECTRICAL SPECS:
- POLES: 3P
- POWER CONTACT CONFIGURATION: 3 NO (Normally Open)
- AUXILIARY CONTACT CONFIGURATION: 1 NO + 1 NC (Integrated)
- RATED OPERATIONAL VOLTAGE (Ue): <= 690V AC 50/60 Hz (Power Circuit), <= 300V DC (Power Circuit)
- RATED OPERATIONAL CURRENT (Ie): 9A at <= 440V AC-3 (Motor Load), 25A at <= 440V AC-1 (Resistive Load)
- COIL VOLTAGE: 24V DC
- CONTROL CIRCUIT TYPE: DC
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 6 kV
- RATED INSULATION VOLTAGE (Ui): 690 V (Power Circuit), 600 V (CSA, UL)
- MOTOR POWER (AC-3): 2.2 kW at 220-230V, 4 kW at 380-400V, 4 kW at 415-440V, 5.5 kW at 500V, 5.5 kW at 660-690V
- MECHANICAL/PHYSICAL:
- TERMINALS: Screw Clamp Terminals
- DIMENSIONS (APPROXIMATE): 45 mm (Width) x 77 mm (Height) x 86 mm (Depth)
- WEIGHT (APPROXIMATE): 0.32 kg
- INTERFACE/CONTROL:
- CONTROL CIRCUIT VOLTAGE: 24V DC
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (Front Face)
- OPERATING TEMPERATURE: -5 to 60 °C
- STORAGE TEMPERATURE: -60 to 80 °C
- ALTITUDE: 3000 m without derating
- COOLING METHOD: Natural Convection
- MOUNTING STYLE: Plate or DIN Rail
- COMPATIBILITY/APPLICATION:
- APPLICATIONS: Motor control, resistive load switching, automation systems, HVAC, pumping, lighting circuits.
- COMPATIBILITY: Compatible with TeSys D thermal overload relays, auxiliary contact blocks, and surge suppressors.
