CQV2 Series Motor Protection Circuit Breaker
CQV2 series motor protection circuit breaker is suitable for AC50/60HZ,rated working voltage to 690V,current 0.1 to 80A circuit,as a three-phasesquirrel cage asynchronous motor overload,phase break,short circuitprotection and infrequent start control,can be used as distribution lineprotection and infrequent load conversion,can also be used as an isolator.
Accessories
■ CQV-AE: Instantaneous Auxiliary Contact.
■ CQV-AN/AD/AM: Combination of Signal Contacts for trouble and short-circuit signals.
■ CQV-AU/AX/AS: Under-voltage Disjoining Accessory.
■ Circuit Shield: Protective cover offering IP55 degree of protection.
Product Features
■ Comprehensive Motor Protection: Specifically designed for three-phase squirrel-cage asynchronous motors, providing overload, phase-failure,and short-circuit protection.
■ Control and Isolation Functionality: Suitable for infrequent motor starting and control, and can also serve as a distribution line protection switch and isolator.
■ Wide Applicability: Compatible with AC circuits up to 690V and rated currents up to 80A.
■ Flexible Configuration: Supports various accessories (e.g., auxiliary contacts A01, A02, etc.), enhancing functionality and signal feedback capabilities.
■ Multiple Model Options: Offers a range of trip unit rated currents (from 2.5A to 80A) to precisely match motors of different power ratings (0.75kW to 32kW).
■ Clear Tripping Characteristics: Provides tripping characteristic curves that define trip times at different current multiples, ensuring predictable and reliable protection
■ Compact Design: Features specific external mounting dimensions for easy installation in distribution boxes.
Operating & Environmental Conditions
■ Protection Target: Primarily for three-phase low-voltage asynchropnous motors.
■ Operating Frequency: Suitable for infrequent starting, control,and load switching operations.
■ Ambient Temperature: Tripping characteristics are defined based on a reference temperature of 20℃.
■ Accessory Placement: Accessories (e.g., auxiliary contacts) are typically mounted on the right side of the circuit breaker.
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.
Frequently Asked Questions
Q1. Do you support product customization based on our design requirements?
A1:Absolutely. We specialize in OEM and ODM cooperation in the low-voltage electrical field and have provided customized services for many internationally renowned companies. We offer full-process support, including R&D design, parameter adjustments, and special material selection, ensuring the product fully meets your requirements.
Q2: What is your production capacity and Minimum Order Quantity (MOQ)?
A2: We operate a highly automated production base with an annual output of over 100 million poles for miniature circuit breakers. Our MOQ policy is flexible. We can provide competitive trial orders for small batches and dedicated production capacity guarantee plans.
Q3: What assurances are there for product quality and certifications?
A3: Our main products are certified with CCC, CE, CB, and more, and are sold in over 30 countries and regions worldwide. The company has established a dedicated Quality Operations Center that works with the business and production departments to implement full-process quality control, ensuring products meet international standards.
Q4: Do you have the capability for product R&D and turning concepts into reality?
A4: We have a complete R&D team and digital workshops, backed by extensive customization experience serving numerous international clients. From concept proposal and sample development to mass production, we provide end-to-end technical support to help bring your ideas to life.
