TPS-ICL-3P-12A Three-Phase AC-Inrush Current Limiter

The TPS-ICL-3P-12A is a DIN rail-mounted, three-phase AC-inrush current limiter designed to protect inductive and capacitive loads from high inrush currents in 400VAC systems. With a rated current of 12A per phase, it effectively limits the peak inrush current to 45A for 100-500ms, preventing unintended fuse tripping and allowing the use of smaller, faster circuit breakers. Featuring an integrated bypass relay—not a simple NTC thermistor solution—it ensures reliable operation after the startup phase. The device accepts wire sizes of AWG13-11 (2.6-4.2mm²), operates in a temperature range of 40°C to 70°C with convection cooling, and complies with safety standards EN60950-1 and EN61000-6-2,3, carrying CE and RoHS certifications. With an MTBF of 300,000 hours, it is ideal for demanding applications including motor starting, transformer protection, and any three-phase system requiring robust inrush current management.

Key Features

• Three-Phase Inrush Protection: Designed for 400VAC systems, limits peak current to 45A for 100-500ms to protect fuses and enable smaller breakers.
• Advanced Bypass Relay: Integrated relay ensures efficient operation post-startup, superior to basic NTC solutions.
• Robust Construction & Compliance: Built with UL V0 plastic, meets EN60950-1 safety standards, and carries CE & RoHS marks.
• Easy Installation: DIN rail mountable (TS 35/7.5 or TS 35/15) with screw terminals for AWG13-11 wires.
• Wide Operating Range: Operates in temperatures from 40°C to 70°C, up to 2000m altitude, and 10-95% RH (non-condensing).
• High Reliability: MTBF of 300,000 hours ensures long-term performance for critical industrial applications.