Bộ ngắt mạch kiểu cuộn DC CQM5NEZ
Bộ ngắt mạch dạng vỏ bọc CHAC CQM5NEZ DC có sẵn với các thiết bị khởi động chỉ dùng từ tính hoặc từ tính nhiệt cho các mạch DC 1500V. Chọn phiên bản từ tính khi cần bảo vệ quá tải và ngắn mạch. Các khung 350A và 630A có khả năng bảo vệ dòng điện từ 63A đến 630A, với công suất ngắt được xác định theo khung và phiên bản M/H.
Giới thiệu sản phẩm
The CHAC CQM5NEZ 1500V DC molded case circuit breaker uses two-pole 350A and 630A frames. Magnetic-only and thermal-magnetic releases address different protection designs, while the M/H code identifies the available breaking-capacity version.
For importers, distributors and equipment manufacturers, CHAC can review the requested configuration against the circuit requirements and destination-market documents. Agree the exact model, drawings and marking requirements before sample approval or a repeat order.
Key Selection Points
Các ứng dụng điển hình
Evaluate CQM5NEZ for DC distribution assemblies where its documented interruption duty matches the circuit. For battery or energy-storage projects, include the prospective fault current and DC time constant in the review; a voltage match alone is insufficient.
Hướng dẫn đăng ký và tuyển chọn
| Selection item | CQM5NEZ configuration | Những điều cần xác minh |
|---|---|---|
| Frame and current | 350 frame: 63–350A; 630 frame: 350/400/500/630A | Confirm the exact available current step. |
| Khả năng phá vỡ | 350 M: 20kA; 350 H: 30kA; 630 M: 20kA | Values are at DC1500V, Ics = Icu, with the stated 2ms time constant. |
| Trip function | Magnetic-only or thermal-magnetic | Confirm whether integral overload protection is required. |
| Terminations | 350: M8, 15N·m ±5%; 630: M10, 25N·m ±5% | Use the matching terminal and torque instructions for the selected frame. |
Use these checks to compare the protection function, configuration and related CHAC products before specifying CQM5NEZ. Related products are selection alternatives or system components, not automatic replacements.
Check the DC fault duty as well as the voltage
DC interruption depends on circuit conditions as well as the nominal voltage.
Keep the frame and M/H code together
The 30kA rating belongs to the 350 H configuration; it is not a series-wide rating.
Compare CQD5NEZ for the required function
The CHAC CQD5NEZ DC isolator switch is designed for circuit isolation at up to 1500V DC. Two frame sizes cover rated currents from 80A to 630A, with front or side operation to suit the equipment layout.
Compare CQM5HU for the required function
The CHAC CQM5HU molded case circuit breaker offers magnetic-only and thermal-magnetic configurations for 800V and 1140V AC distribution circuits. Select a thermal-magnetic version when both overload and short-circuit protection are required. Its 320A and 630A frames offer different current ranges and breaking capacities, so selection should match the system voltage, frame and trip unit.
Need Help Specifying CQM5NEZ?
Send the circuit requirements, selected configuration, destination market and quantity for a model-specific review.
Check the DC fault duty as well as the voltage
DC interruption depends on circuit conditions as well as the nominal voltage. The CQM5NEZ data states a 2ms time constant for its published short-circuit capacities. Submit the project fault level and time constant for engineering review, especially for battery-fed systems.
Keep the frame and M/H code together
The 30kA rating belongs to the 350 H configuration; it is not a series-wide rating. A 630 frame does not automatically have a higher breaking capacity. Include frame, capacity code, trip function, current and accessory requirements in the purchase order.
How to Specify a CQM5NEZ Order
Use the configuration details below in the purchase specification. Keep the approved drawing revision and product identification with the order so repeat deliveries can be checked consistently.
| Order detail | Information to include |
|---|---|
| Frame and current | 350 frame: 63–350A; 630 frame: 350/400/500/630A — Confirm the exact available current step. |
| Khả năng phá vỡ | 350 M: 20kA; 350 H: 30kA; 630 M: 20kA — Values are at DC1500V, Ics = Icu, with the stated 2ms time constant. |
| Trip function | Magnetic-only or thermal-magnetic — Confirm whether integral overload protection is required. |
| Terminations | 350: M8, 15N·m ±5%; 630: M10, 25N·m ±5% — Use the matching terminal and torque instructions for the selected frame. |
| Project and documents | Supply the application, installation conditions and destination-market document requirements. |
| Quantity and identification | State the quantity, sample requirement, packaging language and any proposed branding; confirm feasibility before approval. |
Check Installation Fit Before Approval
Tên loại
| No. | Code | Description |
| ① | CQ | Company Code |
| ② | M | Bộ ngắt mạch dạng khuôn |
| ③ | 5 | Design Code |
| ④ | NEZ | New Energy – DC |
| ⑤ | 350 / 630 | Frame Size |
| ⑥ | M / H | Breaking Capacity Code: M = Standard Type; H = High Breaking Type |
| ⑦ | 2 | Number of Poles: 2P |
| ⑧ | 2/3 | Release Code: 2 = Magnetic Only; 3 = Thermal-Magnetic |
| ⑨ | □ | Internal Accessory Code: See Accessory Code Reference |
| ⑩ | □ | Operating Mode:Direct handle / Optional rotary handle |
| ⑪ | □ | Rated Current |
| ⑫ | □ | Rated Voltage |
| ⑬ | □ | Accessory Voltage |
Operating Conditions
| Operating Altitude | ≤ 5000 m |
| Storage Temperature | -40℃ to +75℃ |
| Relative Humidity | ≤ 50% at +40℃; up to 90% at +20℃ |
| Pollution Degree | 3 |
| Protection Degree | IP20 |
| Cài đặt | Vertical or horizontal |
| Vertical Installation Inclination | ≤ 5° |
Accessory List
| Code | Accessory |
| 0 | None |
| 10 | Shunt Release |
| 20 | Auxiliary Contact |
| 40 | Shunt Release + Auxiliary Contact |
Đặc điểm kỹ thuật
| Tham số | CQM5NEZ-350 | CQM5NEZ-630 |
| Frame Size | 350 | 630 |
| Rated Current In (A) | 63, 80, 100, 125, 140, 160, 180, 200, 225, 250, 280, 315, 320, 350 | 350, 400, 500, 630 |
| Số lượng người Ba Lan | 2P | 2P |
| Rated Operational Voltage Ue | DC1500V | DC1500V |
| Rated Insulation Voltage Ui | 1800V | 1800V |
| Rated Impulse Withstand Voltage Uimp | 12kV | 12kV |
| Breaking Capacity Class | M / H | M |
| Ics = 100% Icu @ DC1500V | M: 20kA / H: 30kA (τ=2ms) | 20kA (τ=2ms) |
| Electrical Endurance | 1,000 cycles | 1,000 cycles |
| Mechanical Endurance | 10,000 cycles | 5,000 cycles |
| Terminal Screw | M8 | M10 |
| Terminal Tightening Torque | 15N·m (±5%) | 25N·m (±5%) |
| Mounting Screw | M4 | M4 |
| Mounting Screw Torque | 1.5N·m (±5%) | 1.5N·m (±5%) |
| Overall Dimensions (L×W×H) | 200 × 83 × 132mm | 205 × 102 × 167mm |
Recommended Conductor Cross-Section
| Rated Current In (A) | 63 | 80 | 100 | 125 | 140/160 | 180/200/225 | 250 | 315 | 320/350 | 400 | 500 | 630 |
| Conductor Cross-Section (mm²) | 16 | 25 | 35 | 50 | 70 | 95 | 120 | 185 | 185 | 240 | 2×50 | 2×95 |
Time-current characteristic curve
Overall and mounting dimensions
CQM5NEZ-350
CQM5NEZ-630
Tại sao nên chọn CHAC
CHAC Electric supplies electrical protection and control products for importers, distributors and equipment brands. For CQM5NEZ, agree the configuration, technical documents, approved sample and identification requirements before production. The company facilities shown below provide company context, not a claim that every model uses the same production or test process.
01
CONFIRM THE SPECIFICATION
Agree the CQM5NEZ configuration, circuit duty and installation requirements.
02
REVIEW THE DOCUMENTS
Confirm model-specific drawings and destination-market requirements.
03
APPROVE THE SAMPLE
Record the accepted configuration and marking requirements.
04
DEFINE ORDER CHECKS
Agree packaging, identification and delivery requirements in the quotation.
Dây chuyền lắp ráp tự động
Phòng thí nghiệm kiểm nghiệm
Xay và dập
Kiểm tra chất lượng
Chúng tôi có thể tùy chỉnh những gì?
Discuss CQM5NEZ product identification, packaging and documentation with CHAC. Each proposed change is subject to technical feasibility, marking rules and approval of the exact order; no altered rating or certification is implied.
Logo & Thương hiệu
Submit logo artwork and marking requirements for review against the available print area and mandatory product markings.
Packaging & Manuals
Define carton labels, packaging language, product identification and instruction requirements for the destination market.
Configuration Selection
Specify CQM5NEZ with the required frame and current, operating conditions and protection duty. Confirm the complete order combination.
Assembly Requirements
Provide the mounting and connection requirements for review. Changes to the housing, terminals or operating arrangement require engineering approval.
Market Documentation
Request documents covering the exact CQM5NEZ model and destination market. A standard reference alone is not evidence of certification.
Sample Approval
Agree the sample specification, drawing revision and acceptance criteria before confirming a production order.
Technical Documents and Support
CQM5NEZ Technical Documents
Request the CQM5NEZ datasheet, configuration drawing, installation instructions and available model-specific market documents.Request Datasheet
Need Technical Documents?
Send the application, electrical requirements, assembly layout and destination market for configuration and document review.Liên hệ với chúng tôi
CQM5NEZ Product FAQ
What is the difference between CQM5NEZ M and H?
The codes identify breaking-capacity versions. At DC1500V and the stated 2ms time constant, the 350 frame lists M at 20kA and H at 30kA. The 630 frame lists M at 20kA. Confirm the exact ordered combination.
Is a 1500V DC MCCB suitable for any battery system?
No. Verify prospective fault current, circuit time constant, current direction, wiring and the protective coordination. The voltage label alone does not establish suitability for every energy-storage circuit.
Can the magnetic-only version provide overload protection?
Not by itself. Specify the thermal-magnetic release when integral overload protection is needed, or provide a separately coordinated overload device. Include the release code in the order.
How do I choose the CQM5NEZ current rating?
Start with load current and conductor capacity, then check trip function, enclosure temperature and protection coordination. Use an available current step within the chosen frame; frame size alone is not the circuit protection setting.
Can I copy a cable size from the CQM5NEZ table?
Treat the conductor table as a product reference. Final sizing also depends on installation method, conductor material, temperature, grouping, voltage drop, short-circuit duty and local rules. Check terminal compatibility and the model-specific torque.
What should a distributor specify when ordering CQM5NEZ?
State frame, rated current, operating voltage, breaking-capacity version, trip function and accessory voltages. Include drawings, destination-market documents, quantity and marking requirements; approve the exact configuration before a repeat order.
Specify the Right CQM5NEZ Configuration
Send CHAC your required configuration, application, destination market and estimated quantity. We will review the requested specification and provide the relevant technical documents and commercial proposal.
