TPS-ICL-3P-25A Three-Phase AC-Inrush Current Limiter

The TPS-ICL-3P-25A is a high-capacity DIN rail-mounted, three-phase AC-inrush current limiter designed for demanding 400VAC industrial applications. With a 25A rated current per phase, it provides robust protection by limiting damaging inrush peaks to 45A for 100-500ms, effectively preventing unintended fuse operation and enabling the use of smaller, faster-acting circuit breakers. The device features an integrated bypass relay—superior to basic NTC solutions—for efficient operation after the startup phase. It accommodates wire sizes of AWG13-11 (2.6-4.2mm²), operates within a 40°C to 70°C temperature range using convection cooling, and complies with EN60950-1 safety standards and EN61000-6-2,3 EMC directives, carrying CE and RoHS certifications. With an MTBF of 300,000 hours and construction using UL V0 plastic material, this limiter is ideal for protecting high-power three-phase equipment including motors, transformers, and other inductive/capacitive loads.

Key Features

• High-Capacity Three-Phase Protection: Rated at 25A per phase for 400VAC systems, limits inrush current peaks to 45A for 100-500ms.
• Advanced Bypass Relay System: Integrated relay ensures reliable operation after startup, outperforming simple NTC solutions.
• Industrial-Strength Compliance: Meets EN60950-1 safety standards, EN61000-6-2,3 EMC directives, with CE and RoHS certifications.
• Easy DIN Rail Installation: Simple mounting on TS 35/7.5 or TS 35/15 rails with screw terminals for AWG13-11 wiring.
• Rugged Environmental Tolerance: Operates at altitudes up to 2000m, 10-95% RH (non-condensing), and storage temperatures from -40°C to 85°C.
• Proven Reliability: MTBF of 300,000 hours ensures long-term performance in demanding three-phase applications including motor starting and transformer protection.