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The Schurter Inc. 4404.0018 is a thermal circuit breaker, part of the T9-611 series, designed for equipment protection. It features a snap-in, fuseholder style, single-pole configuration suitable for panel mounting.
This circuit breaker operates at a rated voltage of 240 VAC and 48/32 VDC, with a current rating from 3 A to 16 A. It provides a conditional short circuit capacity of 2 kA at 240 VAC (IEC 60934) and 2 kA at 240 VDC (UL/CSA). The device offers a degree of protection of IP40 on the front side.
Key electrical specifications include a dielectric strength of 1500 VAC and an insulation resistance greater than 1000 MΩ at 500 VDC. Endurance ratings vary by current, with minimum IEC endurance at 50 switching cycles and typical endurance ranging from 2500 to 6000 switching cycles depending on the current rating.
Operating temperature ranges from -5 °C to 60 °C for most current ratings, with a specific range of -5 °C to 50 °C for the 4 A version. The circuit breaker is designed according to standards such as IEC 60934 and UL 1077, making it suitable for applications like power supplies, industrial appliances, and HVAC systems.
The rated voltage is 240 VAC and 48/32 VDC.
The operating temperature range is -5 °C to 60 °C for 3 A and 5-16 A ratings, and -5 °C to 50 °C for the 4 A rating.
The degree of protection on the front side is IP40.
The dielectric strength is 1500 VAC.
The insulation resistance is greater than 1000 MΩ at 500 VDC.
The conditional short-circuit capacity is 2 kA under IEC 60934 (PC1, AC 240 V) and UL/CSA (SC, AC 240 V, DC 48/32 V).
It is designed according to IEC 60934, UL 1077, CSA C22.2 No. 235, and GB 17701.