접촉기,회로 차단기,감지기,인코더,PLC,변환기
(주문번호: 269471)
제품 유형: Thermistor (PTC) Motor Protection Relay, Ex Explosion-proof, Dual Sensor Circuit
이튼 Moeller EMT6 series for PTC thermistor temperature monitoring of motor windings.
K = ATEX explosion-proof certification; DB = Dual sensor input circuit
✅ Model Code Explanation
EMT6: 시리즈, PTC thermistor motor protection relay
케이: ATEX certified, suitable for Ex e explosion-proof motor applications
DB: Two independent PTC sensor input circuits (simultaneously monitor 2 temperature points, 예를 들어. stator + bearing, or pre-alarm + 여행)
주문 코드: 269471
✅ Key Features
- Dual PTC circuit monitoring, two sensor channels evaluated independently to support pre-warning and protection logic
- Sensor wire break and short-circuit detection (unique to K variants: detects not only wire breakage but also short circuits of sensor cables)
- Zero-voltage safety protection (undervoltage lockout): the relay will not auto-reset after tripping due to power loss; configurable via DIP switch
- Resettable modes: local manual reset / remote reset
- Front panel Test/Reset button for commissioning to simulate over-temperature faults
- Status LEDs: power indication, 결함 표시
- 실 1 safety level (당신의 것 50495), suitable for temperature protection of explosion-proof equipment
✅ Electrical Specifications
공급 전압: 24～240V AC/DC wide range
보조 접점: 1아니요 + 1NC (전환 연락처), rated thermal current 6A
센서 유형: PTC thermistor (130℃ / 150℃ PTC embedded in motor windings)
임계값: Over-temperature trip >1330오; 다시 놓기 <550오; sensor short-circuit fault <50오
설치: DIN rail snap-on mounting, width 22.5mm
터미널: 나사 터미널, tightening torque 1.2Nm
Enclosure protection: IP20 (for cabinet installation only)
주변 온도: Operating -25℃ ~ +60℃ (최대. +45℃ for tightly sealed cabinets)
표준: IEC/EN 60947-8, ATEX, CE, UL, CCC 인증
✅ Applications
Winding temperature protection for Ex-e increased safety explosion-proof motors (primary use case for K models)
Temperature protection for motors, gearboxes, pumps and fans via PTC thermistors
Dual-point temperature monitoring: 예를 들어. one channel for winding over-temperature trip, one channel for bearing pre-alarm
Thermal protection for equipment in chemical, 제약, coal and other explosion hazardous areas
✅ Comparison of Related Series Models
| 모델 | 주문 번호. | 아니요. of Circuits |
| EMT6-K | 269470 | 하나의 |
| EMT6-KDB | 269471 | 듀얼 |
| EMT6-DB | 66167 | 듀얼 |
| EMT6-DBK | 66168 | 듀얼 |
✅ Troubleshooting Guide
- No LED on power-up: Check supply voltage 24~240V AC/DC
- Fault LED steady ON:
PTC over-temperature (저항 >1330오)
Sensor circuit wire break
Sensor cable short-circuit (KDB exclusive detection function)
- Cannot reset after trip: Zero-voltage lockout is activated; power cycle or disable undervoltage lockout via DIP switch
- 테스트 기능: Press front Test button to simulate over-temperature and trigger relay trip
✅ Alternative Selection Reference
Same brand alternative: EMT6-DBK (without ATEX explosion-proof certificate, other functions similar)
국내 대안: Domestic dual-channel PTC motor protection relay (메모: for explosion-proof applications, domestic alternative must provide valid ATEX certificate for direct replacement of EMT6-KDB)
EATON EMT6-KDB Ambient Temperature Specifications
- Open ventilated cabinet operating ambient temperature: -25℃ ～ +60℃
- Sealed cabinet installation (poor heat dissipation): -25℃ ～ +45℃ (reduced upper limit)
- 보관온도: -45℃ ～ +85℃
보충 노트:
Under UL/CSA certified operating conditions, the nominal rated ambient temperature on nameplate is 40℃
For ATEX explosion-proof applications, ATEX code ambient limits must be followed, not solely the 60℃ upper limit
EATON EMT6 Full Series Model List (PTC Thermistor Motor Protection Relay)
Abbreviation Definition
케이: ATEX explosion-proof certified, supports sensor cable short-circuit detection
DB: Dual PTC sensor circuit
EMT62: Dual normally open contact version
(230다섯): Fixed 230V AC supply; no suffix = wide voltage 24~240V AC/DC
| 모델 | 주문 번호. | Sensor Circuits | 전원공급장치 | 설명 |
| EMT6 | 66166 | 하나의 | 24~240V AC/DC | 기본 모델, no short-circuit detection, non-explosion-proof |
| EMT6(230다섯) | 66400 | 하나의 | 230뷔와 | Single circuit, fixed 230V power supply |
| EMT6-DB | 66167 | 듀얼 | 24~240V AC/DC | Dual circuit, no short-circuit detection, non-explosion-proof |
| EMT6-DB(230다섯) | 66401 | 듀얼 | 230뷔와 | Dual circuit, fixed 230V power supply |
| EMT6-DBK | 66168 | 듀얼 | 24~240V AC/DC | Dual circuit with sensor short-circuit detection, no ATEX |
| EMT6-K | 269470 | 하나의 | 24~240V AC/DC | Single circuit, ATEX certified, with short-circuit detection |
| EMT6-KDB | 269471 | 듀얼 | 24~240V AC/DC | Dual circuit + ATEX + 단락 감지 (target model) |
| EMT62 | 171889 | 하나의 | 24~240V AC/DC | Single circuit, dual NO output contacts |
| EMT62-DB | 171890 | 듀얼 | 24~240V AC/DC | Dual circuit, dual NO output contacts |
빠른 선택 가이드
- Explosion hazardous area (Ex-e motor) → EMT6-K / EMT6-KDB
- 일반산업, require sensor cable short-circuit detection → EMT6-DBK
- 일반산업, dual temperature monitoring, short-circuit detection not required → EMT6-DB
- Two independent normally open alarm outputs required → EMT62 / EMT62-DB
EATON EMT6-KDB (Order No.269471) 물리적 크기
DIN 레일 장착; housing dimensions identical across all EMT6 variants
너비(여): 22.5 mm (nominal 23mm, standard 22.5mm DIN rail module width)
키(시간): 83 mm
깊이(디): 103 mm (measured from DIN rail mounting surface to front face)
✅ Weight: 0.13 kg approx.
비고:
- For cabinet layout calculation, 사용 22.5 mm 폭 (1 기준 치수)
- Additional wiring clearance is required for terminal cabling
- EMT6, EMT6-K, EMT6-DB, EMT6-DBK, EMT6-KDB share identical housing dimensions
