OVERVIEW

Official designation: TECO CU-11 (CU Series, AC Magnetic Contactor)

Role/Application: Three-pole AC magnetic switch designed for motor control and power loads. Original coil voltage of 36 V AC is available, though 24 V AC and higher are more common. It is a direct replacement for TAIAN CN-11.

KEY SPECS SUMMARY

Power: Coil 36 V AC, Max operational 690 V

Interfaces / Ports: Three main contacts, one normally closed auxiliary contact (3A1b)

Indicators: Refer to the latest manufacturer manual.

Operating Temp: Minus 20 degrees C to 55 degrees C

Platform / Compatibility: AC3 11 A, AC1 25 A

Limit: Max motor capacity 5.5 kW (380/400 V)

Lifecycle: Direct replacement for TAIAN CN-11

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the rated thermal current for the CU-11 contactor in AC1 duty?

A: The rated thermal current for AC1 duty is 25 A.

Wiring & Installation:

Q: What are the primary dimensions of the CU-11 unit for panel mounting?

A: The dimensions are 45 millimeters wide by 70 millimeters high by 82 millimeters deep.

Troubleshooting & Compatibility:

Q: What is the expected electrical and mechanical durability in operations?

A: Electrical durability is 1 million operations and mechanical durability is 5 million operations.

Replacement & Upgrades:

Q: Can an auxiliary contact block be added to the standard CU-11 unit?

A: Yes, the contactor supports front or side mountable auxiliary contact blocks.