GV3 80A Motor Protection Circuit Breaker

Ensure reliable motor protection with the CDADA GV3 80A Motor Protection Circuit Breaker, part of the advanced GV2 GV3 series designed by Shanghai DADA Electric CO., LTD. Engineered on a next-generation technology platform using fully automated production and testing equipment, this motor protection circuit breaker (MPCB) offers comprehensive protection for motors in demanding industrial environments.

With a setting current range of 25A to 80A, it provides thermal overload protection, short-circuit protection, phase-loss detection, and an isolation function—all integrated into one robust device. Certified to CE standards, featuring a rated insulation voltage of 690V and capable of 110,000 mechanical and electrical operations, the GV3 MPCB is perfect for applications such as pumps, fans, compressors, conveyors, and HVAC systems. Its temperature compensation ensures consistent performance across varying ambient conditions, while optional accessories like auxiliary contacts, undervoltage release, and shunt trip enhance functionality and safety.

Key Specifications

Model Series: GV3 MPCB 80A

Brand: CDADA | Manufacturer: Shanghai DADA Electric CO.,LTD

Certification: CE

Setting Current Range: 25A – 80A (adjustable via dial)

Frame Rating: 80A

Rated Operating Voltage: 690V AC

Rated Insulation Voltage (Ui): 690V

Impulse Withstand Voltage (Uimp): 6000V

Operating Frequency: 50/60Hz

Trip Class: 10A (standard for general-purpose motors)

Protection Functions:

★ Thermal overload protection

★ Short-circuit protection

★ Phase-loss protection

★ Isolation function (visible break)

★ Built-in temperature compensation

Mechanical Life: 110,000 operations

Electrical Life (AC-3, 400V): 110,000 operations

Tightening Torque: 1.7 N·m

Operation Type: Push-button ON/OFF with clear trip indicator

Mounting: 35mm DIN rail

Accessories:

AE forward auxiliary contact

AN side auxiliary contact

AU undervoltage release

AS shunt release

Outline Dimension

Why Choose CDADA GV3 80A Motor Protection Circuit Breaker?

★ Comprehensive Protection

Combines circuit breaker + thermal overload relay + isolator in one device—reduces panel space and wiring complexity.

★ High Durability & Reliability

110,000 mechanical/electrical cycles ensure long-lasting performance even under heavy-duty conditions.

★ Temperature Compensation

Built-in thermal compensation ensures accurate tripping regardless of ambient temperature variations.

★ Space-Saving Design

Compact DIN-rail mounted design makes it ideal for industrial control panels and OEM machinery where space is at a premium.

★ Full Accessory Ecosystem

Supports AE (forward auxiliary), AN (side auxiliary), AU (undervoltage release), AS (shunt trip)—enabling remote signaling, auto-shutdown, or PLC integration.

★ Global Compliance

CE certified with 690V rating—suitable for international markets including Europe, Asia, Africa, and Latin America.

★ our factories have successfully passed audits by renowned third-party agencies like SGS/Intertek/TUV/KEMA. Audit reports are available for qualified potential partners.

Typical Applications

Industrial Motors: Pumps, fans, compressors, conveyors

HVAC Systems: Large chillers, ventilation units

OEM Machinery: Packaging machines, food processing equipment

Building Automation: Elevator auxiliaries, large ventilation controls

Retrofit Projects: Replacing fuses + thermal relays with integrated MPCB

Frequently Asked Questions

Q1: What’s the difference between GV2 and GV3 80A Motor Protection Circuit Breakers?

A1: The GV3 series is designed for higher current ratings (up to 80A), whereas the GV2 series covers lower currents (up to 32A). GV3 is suitable for larger motors and heavier loads.

Q2: Can I use GV3 MPCB for single-phase motors?

A2: Yes, but it's primarily designed for three-phase motors. For single-phase applications, consider the GV2 series which is more tailored for smaller motors.

Q3: Does the GV3 MPCB have built-in temperature compensation?

A3: Yes! The thermal overload mechanism includes temperature compensation, ensuring consistent tripping performance across a wide range of ambient temperatures—from cold storage rooms to hot factories.

Q4: How many operations can the GV3 handle before needing replacement?

A4: The mechanical life is rated for 110,000 operations, and the electrical life (AC-3, 400V) is also 110,000 operations—making it highly durable for continuous use in industrial settings.

Q5: Why choose CDADA GV3 over other brands?

A5: CDADA offers:

● Advanced automation in production → high quality and consistency

● Robust CE certification with detailed test reports

● Wide range of accessories (AE/AN/AU/AS) for enhanced functionality

● Competitive pricing without compromising on quality

● Fast delivery and technical support for OEMs and distributors