OVERVIEW

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

Role/Application: Three-pole magnetic switching device designed for reliable control of three-phase motors and power loads in industrial circuits, featuring a standard 110 V AC control coil.

KEY SPECS SUMMARY

Power: Coil 110 V AC, Max operational 690 V

Interfaces / Ports: 3 Main Power, 1 NC 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 (380/415V)

Lifecycle: Direct replacement for TAIAN CN-11

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the physical dimensions of the CU-11 contactor for panel space planning?

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

Wiring & Installation:

Q: What is the recommended wire cross section for the main power terminals on the CU-11?

A: Refer to the latest manufacturer manual for specific wire gauge and torque requirements.

Troubleshooting & Compatibility:

Q: What is the expected electrical and mechanical durability of the CU-11 contactor?

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

Replacement & Upgrades:

Q: Does the CU-11 model offer an option for a Normally Open auxiliary contact instead of the specified NC contact?

A: Yes, the CU-11 model is available in configurations with a Normally Open auxiliary contact, often designated 3A1a.