CQV2 Series Motor Protection Circuit Breaker
The CQV2 Series Motor Protection Circuit Breaker is a CHAC motor protection circuit breaker for overload, phase-failure and short-circuit protection. The page keeps the model-specific technical table and original product images so buyers can verify voltage, current, configuration, mounting and applicable standards before ordering. Final suitability depends on the complete circuit, installation method and destination-market rules.
Product Overview
CQV2 Series Motor Protection Circuit Breaker is a motor protection circuit breaker intended for overload, phase-failure and short-circuit protection. The current product record identifies it for three-phase motors, pumps and machine feeders. Use the exact model variant and preserved technical source as the basis for procurement rather than assuming that every family member has the same rating.
Verified source summary: Type Designation Tripping Characteristic Curve Test condition: Ambient temperature 20℃ Curve parameters (based on multiples of setting current in): (1) Starting from cold state, 3-pole (2) Starting from cold state, 2-pole (3) Starting from hot state, 3-pole Dimensions (mm) CQV2-ME CQV-AU/AX/AS CQV-AN/AD/AM CQV-AE Circuit Shield Technical Specifications Product Model Rated current(A) Motor output(kW) Setting Range(A)
Key Features
Typical Applications
Typical use can include three-phase motors, pumps and machine feeders when the project confirms system voltage, current, fault or surge exposure, conductor and enclosure requirements, and the selected variant’s installation instructions. This page does not replace the project design or the authority having jurisdiction.
Applications and Selection Guide
Use the following decision points with the preserved model data. Product-family descriptions explain intent, but the exact technical table controls the ordered variant.
| Selection point | CQV2 Series Motor Protection Circuit Breaker | What the project must confirm |
|---|---|---|
| Application | Motor Protector projects | Confirm the actual system and environment |
| Selection basis | overload, phase-failure and short-circuit protection | Use the exact model and technical table |
| Installation | Follow the model instructions | Check mounting, clearances and termination |
| Compliance | Use the listed standard where applicable | Verify edition, scope and destination rules |
| Adjacent product | Evaluate the related CHAC family where function differs | Do not substitute without engineering review |
Function
overload, phase-failure and short-circuit protection
Match the protection or switching function to the system.
Configuration
Model-specific options
Confirm current, voltage, poles, terminals or accessories from the table.
Installation
Mechanical and electrical fit
Check enclosure, mounting, wiring space and maintenance access.
Project evidence
Documents and test records
Retain the approved drawing, technical sheet and commissioning record.
Ordering Guide
- State the exact model and variant.
- Provide the system voltage, current, frequency and load or protection function.
- Confirm mounting, terminals, accessories, enclosure and environmental conditions.
- Share quantity, destination market and required technical documents.
Installation and Coordination Checks
- Verify the model’s ratings and connection arrangement against the project drawings.
- Check conductor, busbar, enclosure, clearances and tightening requirements using the product documentation.
- Coordinate upstream and downstream protection or control devices where applicable.
- Use qualified personnel for installation, testing, isolation and maintenance.
Type Designation
Tripping Characteristic Curve
Test condition: Ambient temperature 20℃
Curve parameters (based on multiples of setting current in):
(1) Starting from cold state, 3-pole
(2) Starting from cold state, 2-pole
(3) Starting from hot state, 3-pole
Dimensions (mm)
CQV2-ME
CQV-AU/AX/AS CQV-AN/AD/AM CQV-AE
Circuit Shield
Technical Specifications
| Product Model | Rated current(A) | Motor output(kW) | Setting Range(A) | Order Number | Packing parameters | |
| CQV2-ME32 | Thermal overload releases
|
Instantaneous overcurrent releases
|
QTY:50PCS N.W:13.5KG G.W:15KG MEAS:48X27X19CM |
|||
| 0.16 | 0.04 | 0.1-0.16 | 1.9 | CQV2-ME01 | ||
| 0.25 | 0.07 | 0.16-0.25 | 3 | CQV2-ME02 | ||
| 0.4 | 0.09/0.12 | 0.25-0.4 | 4.8 | CQV2-ME03 | ||
| 0.63 | 0.12/0.18 | 0.4-0.63 | 7.2 | CQV2-ME04 | ||
| 1 | 0.25 | 0.63-1 | 12 | CQV2-ME05 | ||
| 1.6 | 0.37/0.55 | 1-1.6 | 19 | CQV2-ME06 | ||
| 2.5 | 0.75 | 1.6-2.5 | 30 | CQV2-ME07 | ||
| 4 | 1.1/1.5 | 2.5-4 | 51 | CQV2-ME08 | ||
| 6.3 | 2.2 | 4-6.3 | 78 | CQV2-ME10 | ||
| 10 | 3/4 | 6-10 | 138 | CQV2-ME14 | ||
| 14 | 4/6.5 | 9-14 | 170 | CQV2-ME16 | ||
| 18 | 7/8 | 13-18 | 220 | CQV2-ME20 | ||
| 23 | 8/10 | 17-23 | 320 | CQV2-ME21 | ||
| 25 | 9/12 | 20-25 | 350 | CQV2-ME22 | ||
| 32 | 15 | 24-32 | 420 | CQV2-ME32 | ||
| CQV2-ME80 | 40 | 18.5 | 25-40 | 480 | CQV2-ME40 | QTY:30PCS N.W:23KG G.W:23.5KG MEAS:42X36X27.7CM |
| 63 | 28 | 40-63 | 720 | CQV2-ME63 | ||
| 80 | 32 | 56-80 | 960 | CQV2-ME80 | ||
Accessories Description
CQV-AE: Instantaneous Auxiliary Contact.
CQV-AN/AD/AM: Combination of Signal Contacts for trouble and short-circuit signals.
| Product Model | Accessory Name | Part Code | Contact Configuration | Mounting Position |
| CQV-AE | Instantaneous Auxiliary Contact | AE1 | 1NO or 1NC | Front |
| CQV-AE | Instantaneous Auxiliary Contact | AE11 | 1NO or 1NC | Front |
| CQV-AE | Instantaneous Auxiliary Contact | AE20 | 2NO | Front |
| CQV-AN (-AD-AM) | Trouble Signal Contact | AD1001 | 1NC (Fault) | Left |
| CQV-AN (-AD-AM) | Trouble Signal Contact | AD1010 | 1NO (Fault) | Left |
| CQV-AN (-AD-AM) | Instantaneous Auxiliary Contact | AM11 | 1NO + 1NC | Left |
CQV-AU/AX/AS: Under-voltage Disjoining Accessory.
| Product Model | Release Type | Part Code | Voltage | Operating Range |
| CQV2-AU (-AX-AS) | Undervoltage Release | AU225 | 220-240V AC | Operate: 0.85-1.1Ue; Trip: 0.35-0.7Ue |
| CQV2-AU (-AX-AS) | Undervoltage Release | AU385 | 380-415V AC | Operate: 0.85-1.1Ue; Trip: 0.35-0.7Ue |
| CQV2-AU (-AX-AS) | Shunt Release | AS115 | 220-240V AC | Operate: 0.85-1.1Ue; Trip: 0.2-0.75Ue |
| CQV2-AU (-AX-AS) | Shunt Release | AS225 | 220-240V AC | Operate: 0.85-1.1Ue; Trip: 0.2-0.75Ue |
| CQV2-AU (-AX-AS) | Shunt Release | AS385 | 220-240V AC | Operate: 0.85-1.1Ue; Trip: 0.2-0.75Ue |
CQV2-MC02: Circuit Shield
| Product Model | Application | Protection Type | Protection Rating | Packing Dimensions (cm) |
| CQV2-MC02 | For CQV2 breakers with/without accessories (max 1/side) | Surface-mount. double-insulated, sealed cover | IP55 | 51×31.5×48.5 |
Why Choose CHAC
With 30+ years of manufacturing experience, 1100+ employees, 100M+ poles
annual capacity and 90% automated production, CHAC provides stable production capacity and strict
quality control for global OEM/ODM customers. Our in-house manufacturing system supports long-term
cooperation for electrical brands, importers and distributors.
30+
YEARS EXPERIENCE
Specialized in low-voltage electrical manufacturing
1100+
EMPLOYEES
Professional team ensures stable quality and delivery
100M+
POLES ANNUAL CAPACITY
Large-scale production capacity to meet global demand
90%
AUTOMATED PRODUCTION
Advanced automation for high efficiency and consistency
Automated Assembly Line
Testing Laboratory
Injection & Stamping
Quality Inspection
Strict quality control system ensures every product meets global standards.
What Can We Customize?
CHAC supports customization of coil voltage, auxiliary contact configuration,
electrical parameters, product branding,packaging design and engineering development according to customers’ equipment and market requirements.
Coil Voltage
AC and DC coil voltage options tailored to application requirements.
Auxiliary Contacts
Flexible auxiliary contact combinations for different control functions.
Electrical Parameters
Current ratings, protection ranges and functional parameters can be customized.
Product Branding
Private label logos, nameplates and product identification support.
Packaging Design
Custom cartons, labels, manuals and packaging solutions.
Engineering Development
Support from drawing optimization to product development and application matching.
Download
CQV2 Series Motor Protector
Complete product overview for low-voltage electrical components and product selection reference.
Need Technical Documents?
Contact us for datasheets, certificates, drawings, selection guidance or OEM/ODM project support.
CQV2 Product FAQ
What protection does the CQV2 provide?
The product record describes overload, phase-failure and short-circuit protection for compatible AC motor circuits. Confirm the exact setting range and motor data.
How is the current setting selected?
Set the protector from the motor nameplate and measured operating conditions, then verify starting current, ambient temperature and conductor coordination.
Can it be used as an isolator?
The current record identifies an isolation function, but the installation must still meet the required isolation, enclosure and local-code conditions.
Which motors are suitable?
The published application is three-phase squirrel-cage asynchronous motors. Confirm motor power, voltage, duty and starting method.
What accessories can be added?
Auxiliary, signal or under-voltage accessories depend on the CQV2 variant. Check the exact accessory code and wiring diagram.
How should nuisance trips be investigated?
Record motor current, phase balance, start time, ambient temperature and terminal condition before changing the setting.
Confirm the Right CQV2 Configuration
Send the exact model, operating conditions, quantity, destination market and required documents. CHAC will review the request against the published product data.
