Fuji SC‑N4 3극 AC 접촉기

완전한 기술 사양, Replacement Models and Selection Points for Fuji SC‑N4 (NEO SC Series) 3‑Pole AC Contactor

1. 핵심사양

1.1 주 회로 매개변수

폴란드: 3 극; 주요 연락처: 3아니요; Standard auxiliary contacts: 2a2b (double contact design for higher reliability)

Rated current AC‑3: 80 에이; Corresponding motor power: 18.5 kW at 200–240 V, 37 kW at 380–440 V

Rated current AC‑1 / Thermal current: 135 에이

Rated insulation voltage Ui: 690 다섯; 기계적 수명: 최대 10 백만 개의 작업; Electrical life at AC‑3: 1 백만 개의 작업

인증: IEC/EN 60947‑4‑1, UL, CSA, CE, CCC

1.2 Coil and Mounting

Available coil voltages: AC 100V, 200다섯, 220다섯, 380다섯; AC/DC universal type also available (예를 들어. SC‑N4/SE); 빈도: 50/60 헤르츠

치수 (폭×깊이×높이): 88 × 117 × 127 mm; 무게: 대략. 1.5 kg

설치: Standard DIN rail or screw mounting; Can be directly fitted with Fuji thermal overload relays (예를 들어. TR‑N4 series) to form a starter

2. Cross‑Brand Replacement Models (Same Rating, Direct Interchangeable – Match Coil Voltage)

3. Selection and Replacement Notes
4. Coil voltage must be exact: Different voltages (AC200V vs AC220V, AC vs DC) are not interchangeable; otherwise coil burnout or failure to pull in will occur.
5. Load type distinction: AC‑3 (모터) 80 에이, AC‑1 (resistive/heating) 135 에이; Do NOT use AC‑1 contactors for motor duty in place of AC‑3.
6. Auxiliary contact quantity: SC‑N4 standard: 2아니요+2NC; additional modules can be added if more contacts are required.
7. 주변 조건: IP20 보호, operating temp ‑5℃～+40℃; altitude ≤2000 m; humidity ≤85% non‑condensing.
8. 아크 소멸 & surge: Surge suppressor (RC or varistor) recommended across coil to reduce interference.
9. 일반적인 응용 분야

Commonly used for direct starting, star‑delta starting of three‑phase asynchronous motors up to 37 kW (380 다섯); also for power switching control in fans, 슬리퍼, injection molding machines, air compressors and other industrial equipment.

Fuji Contactor SC‑N4

Purchasing & Replacement Checklist

(Can be sent directly to purchasing / warehouse / maintenance for ticking)

1. 모델 확인

Main model: SC‑N4

시리즈: Fuji NEO SC Series

Current rating: AC‑3 80A (for 37kW/380V motor)

2. Key Parameters to Verify
3. 주요 연락처: 3 poles NO (3아니요)
4. Standard auxiliary contacts: 2a2b (2아니요 + 2NC)
5. Rated operating current:

AC‑3 (모터): 80에이

AC‑1 (resistive): 135에이

4. Suitable motor: 37380V에서 kW
5. Coil voltage (critical):

흔한: AC220V / AC380V / AC110V

DC type: SC‑N4/G (DC coil)

3. Direct Cross‑Brand Replacement Table

> Replacement rule: 80에이 + same coil voltage + 2a2b auxiliary contacts

4. 5‑Point Order & Installation Checklist

☐ Coil voltage matches exactly (AC/DC not interchangeable)

☐ Auxiliary contacts: 2a2b (add modules if needed)

☐ For motors: must be AC‑3 80A class

☐ Mounting: DIN 레일 / screw fixing both supported

☐ If surge suppressor / rectifier needed: note in advance

5. 표준 액세서리

Matching thermal relay: TR‑N4 series

Optional add‑ons: side auxiliary contact modules, surge suppressors

Complete Accessory Model Manual for Fuji Contactor SC‑N4

Below is the dedicated accessory list for SC‑N4 (NEO SC series), sorted by function with exact models, specifications and matching points for direct purchasing and replacement.

1. Core Matching Thermal Overload Relay (Required)

선택: Set thermal relay current to 1.1–1.25 × motor rated current

2. Auxiliary Contact Modules (Control Circuit Expansion)

SC‑N4 standard: 2a2b; expandable via top / side mounting

> Rule: Top and side mounting cannot be used together; total max 4a4b

3. Surge Suppression Units

> 메모: AC/DC coils require dedicated suppressors; not interchangeable

4. Safety Protection Accessories

> Tip: SZ‑N4T is dedicated to SC‑N4; do NOT replace with larger models like SZ‑N8T

5. Coil Optimization Accessories

> 메모: Super magnet coil requires SZ‑GS/N4 driver; not direct replacement

6. 설치 & Wiring Accessories

> Recommend SZ‑SP2 when cable > 16 mm²

7. Replacement Parts (For Maintenance)

> 유지: Replace if main contact wear > 1 mm or aux contact resistance > 100 mΩ

8. Accessory Selection Quick Guide (By Application)