ABB TKMA3Y1200AMP Molded Case Circuit Breaker

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1. Product Overview

The ABB TKMA3Y1200AMP is a Molded Case Circuit Breaker (MCCB) designed for industrial and commercial power distribution systems, providing overload and short-circuit protection. It features high rated current capacity, fast response, and reliable interruption, effectively protecting circuits and equipment. The TKMA series is compact and suitable for industrial and high-power applications.

2. Technical Specifications

• Model: TKMA3Y1200AMP

• Brand: ABB

• Type: Molded Case Circuit Breaker (MCCB)

• Rated Current: 1200 A

• Number of Poles: 3P

• Rated Insulation Voltage: 1000 V AC

• Rated Operational Voltage: 690 V AC

• Short-Circuit Breaking Capacity: up to 65 kA (AC-3, 400 V)

• Trip Characteristics: Thermal-magnetic trip, adjustable overload and short-circuit protection

• Mechanical Life: ~10,000 operations

• Electrical Life: ~5,000 operations (rated load)

• Protection Rating: IP20

• Mounting: Panel or rack-mounted

• Applications: Industrial distribution, plant main distribution, substations, and large motor protection

3. Key Advantages & Features

1. High Rated Current – 1200 A for large industrial distribution systems.

2. Overload & Short-Circuit Protection – Thermal-magnetic trip provides fast response to faults.

3. High Reliability – Quality materials and precise mechanisms ensure long-term stable operation.

4. Compact Design – Saves installation space compared to similar-rated breakers.

5. Adjustable Protection – Trip settings can be adjusted according to load requirements.

6. Standardized & Safe – Compliant with IEC/EN 60947-2 for safe industrial and commercial distribution.

4. Typical Applications

• Industrial plant main distribution

• Large motor and drive equipment protection

• Factory automation and production line power distribution

• Substations and distribution rooms

• Energy management systems and distribution networks

• HVAC systems and large building electrical control

5. Installation & Usage Notes

1. Power Matching – Ensure voltage and current match the breaker’s rated values.

2. Secure Wiring – Terminals must be tightened to prevent arcing and poor contact.

3. Environmental Conditions – Avoid moisture, dust, and corrosive gases; ensure proper ventilation.

4. Operation Guidelines – Avoid frequent manual operation under load; ensure trip functions operate correctly.

5. Regular Inspection – Check mechanical operation, contact wear, and terminal connections regularly for safe operation.