Schneider NSC630K-3P-630A MCCB

1. Model Interpretation and Product Positioning

NSC630K-3P-630A is a Schneider NSC series moulded case circuit breaker (เอ็มซีซีบี), a core component for power distribution protection. It provides overload, short-circuit and earth fault protection for three-phase circuits, and is a key protective device in industrial and commercial power distribution systems.

2. พารามิเตอร์ทางเทคนิคหลัก

3. Core Functions and Features
4. กลไกการป้องกันสามชั้น

Long-time protection: Prevents damage from prolonged overload heating

Short-time protection: Handles short-circuit faults with selective tripping

Instantaneous protection: Quickly clears severe short circuits to safeguard equipment

2. Double-break Technology: Excellent arc extinguishing, stable breaking performance, extended service life
3. Modular Accessories: Supports auxiliary contacts, ผู้ติดต่อปลุก, การปล่อยแรงดันตก, ฯลฯ.
4. Mechanical Indication: Clearly shows ON/OFF status for safe operation
5. EverLink Connection System: Sealed terminals ensure reliable connection and reduce overheating risks
6. สถานการณ์การใช้งาน

NSC630K-3P-630A is designed for three-phase distribution systems requiring 35kA breaking capacity and precision electronic protection:

1. Industrial Sector

Factory main power distribution: Main switch for workshops and production lines, protecting three-phase motors, inverters, ฯลฯ.

Heavy machinery: Main circuit protection for plastics, textile, machine tools and other large power equipment

Construction temporary power: Main switch for site main distribution boards

New energy systems: Output protection for PV inverters and wind converters

2. ทางการค้า & Public Buildings

Large shopping malls: Protection for central air conditioning, ปั๊ม, elevators and other three-phase loads

Office buildings: Main switch in power distribution rooms for entire building supply

ศูนย์ข้อมูล: Input/output protection for UPS systems

Hospitals & schools: Protection of critical power equipment

3. Infrastructure

Wastewater treatment plants: การป้องกันสำหรับปั๊ม, fans in humid environments

Rail transit: Station auxiliary power systems for HVAC, แสงสว่าง

Telecom base stations: Protection for diesel generators and UPS

5. แนวทางการติดตั้งและบำรุงรักษา

หมายเหตุการติดตั้ง

1. Mounting position: Vertical installation in cabinet, with minimum clearance ≥20mm top/bottom/left/right for heat dissipation
2. การติดตั้ง: Standard mounting plate, 4 fixing holes for stable installation
3. ข้อมูลจำเพาะของสายไฟ:

Conductor size: For 630A, recommended copper cable ≥185mm²

Torque: Tighten to EverLink standard torque to avoid loose heating

4. Trip settings: Adjust Ir (long-time), Isd (short-time), Ii (ทันที) according to load characteristics

Maintenance Notes

1. การตรวจสอบอย่างสม่ำเสมอ (quarterly): Handle status, terminal temperature, insulation performance
2. Operation test (semi-annually): Manual ON/OFF to confirm mechanical function
3. Trip calibration (annually): Verify protection accuracy with professional equipment
4. สิ่งแวดล้อม: Keep area clean and dry, free from dust and corrosive gases
5. Alternatives and Upgrade Recommendations
6. ทางเลือกชุดเดียวกัน

NSC630N-3P-630A: 50kA@415VAC, for higher short-circuit current systems

NSC630H-3P-630A: 70kA@415VAC, for heavy industrial applications

2. Upgrade Alternative (New Generation)

NSX630K-3P-630A: New-generation Schneider MCCB with higher breaking, intelligent trip and expanded functions

ข้อดี: MicroLogic 2.3 trip unit, การตรวจสอบระยะไกล, flexible modular design

การใช้งาน: Modern distribution systems requiring intelligent monitoring and high precision

3. ทางเลือกข้ามแบรนด์

ABB Tmax T6-630-3P: Equivalent breaking and protection, suitable for ABB systems

Siemens 3VT630-3P-630A: Standard MCCB for Siemens system integration

Schneider NSC630K-3P-630A is a 3-pole MCCB with 35kA breaking capacity and 630A rated current. It provides reliable protection, mature technology and wide applicability, making it ideal for industrial and commercial distribution. It is suitable for three-phase circuits requiring electronic protection and medium short-circuit levels. For higher breaking or intelligent functions, upgrade to the NSX series.

Detailed Parameter Comparison: Schneider NSC630K-3P-630A vs NSX630K-3P-630A

Key Conclusions at a Glance

NSC630K: Economic basic version, 35กะว่าแตก, ETS2.3 electronic trip, การเดินสายไฟด้านหน้า, for general industrial & commercial use

NSX630K: New-generation intelligent version, 36กะว่าแตก, Micrologic 2.3 trip, supports plug-in/withdrawable mounting, for new energy and high-reliability applications

Selection focus: ทำลายความจุ, mounting flexibility, intelligent functions and budget

1. Model and Product Positioning Comparison

2. Core Technical Parameters Comparison

3. Functional Features and Accessories Comparison

4. Installation and Maintenance Comparison
5. ข้อกำหนดในการติดตั้ง

NSC630K

Vertical mounting, นาที. 20mm clearance for heat dissipation

Front wiring, suitable for 185mm² copper cables

Fixed only, position cannot be adjusted after installation

NSX630K

Vertical mounting, นาที. 25mm clearance

Front/rear wiring, 185–240mm² cables

Plug-in/withdrawable for fast replacement

2. Maintenance Differences

5. Application Scenarios and Selection Advice
6. Best for NSC630K

General industrial distribution, short-circuit current ≤35kA@415VAC

Commercial buildings with low intelligence requirements

Budget-limited projects needing only basic protection

Non-critical loads with low maintenance flexibility needs

2. Best for NSX630K

Data center UPS input/output requiring high reliability

New energy (พีวี, wind, EV charging) with high voltage and high short-circuit current

ราว, airports, hospitals and critical infrastructure

Modern systems needing remote monitoring, energy management, fault tracing

Frequent operation or fast maintenance requirements

3. Selection Matrix

6. Summary and Alternatives

Core Differences

1. แตก: NSX630K slightly higher (36kA vs 35kA)
2. Intelligence: NSX supports metering, การสื่อสาร, logging; NSC basic only
3. การติดตั้ง: NSX plug-in/withdrawable for easier maintenance
4. Life: NSX has longer mechanical and electrical life
5. Cost: NSC more economical, ประมาณ. 70–80% of NSX

ทางเลือก & การอัพเกรด

1. Same-series: NSC630N (50ที่), NSC630H (70ที่); NSX630N (50ที่), NSX630H (70ที่)
2. Cross-brand:

เอบีบี: Tmax T6-630-3P

ซีเมนส์: 3VT630-3P-630A

CHINT: NM1-630-3P-630A (economic)

DELIXI: CDM1-630-3P-630A (economic)

3. Upgrade Path: NSC systems can upgrade to NSX with compatible dimensions and wiring

Cross-brand Interchange Table for Schneider NSC630K / NSX630K

(3P-630A-35/36kA)

Core Matching Principle

Interchangeable models must meet: 3 เสา, 630จัดอันดับปัจจุบัน, 35–36kA breaking capacity (Class K/36kA), หน่วยการเดินทางแบบอิเล็กทรอนิกส์ (LSI protection), fixed mounting (some plug-in)

1. Complete Interchange Table

2. Brand-specific Alternatives

ABB Alternatives

Siemens Alternatives

Chinese Alternatives (CHINT / DELIXI)

3. Key Interchange Notes
4. Technical Matching Points

ทำลายความจุ: ≥35kA@415V for reliable fault interruption

Trip type: Electronic (LSI) preferred; thermal-magnetic lower cost but less precise

ขนาด:

NSC/NSX: 140×100×220mm (ก×ล×ส)

ABB T6: 140×103.5×205mm, ทดแทนโดยตรง

Siemens 3VT: 145×105×225mm, check space

Wiring capacity: Suitable for 185–240mm² copper cables

2. Functional Selection Guide

3. Replacement Procedure
4. Confirm system parameters: แรงดันไฟฟ้า, short-circuit current, load type
5. Select matching model: เสา, ปัจจุบัน, breaking, ประเภทการเดินทาง
6. Verify mounting space and dimensions
7. Replace: power off → remove old breaker → install new one → wire → set trips → test
8. Record: model, date, trip settings
9. Project Selection Matrix

NSC630K: Suitable for general industry and commerce; upgradable to NSX630K or replaced by Chinese brands

NSX630K: For high reliability and intelligence; interchangeable with ABB T6N, Siemens 3VT

Chinese brands: CHINT NXM, DELIXI CDM3 offer cost-effective alternatives with sufficient basic performance