EATON EMT6-KDB Motor Protection Relay

(رقم الطلب: 269471)

نوع المنتج: Thermistor (المؤسسة العامة للاتصالات) تتابع حماية المحرك, Ex Explosion-proof, Dual Sensor Circuit

إيتون 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: مسلسل, PTC thermistor motor protection relay

ك: ATEX certified, suitable for Ex e explosion-proof motor applications

ديسيبل: Two independent PTC sensor input circuits (simultaneously monitor 2 temperature points, على سبيل المثال. الجزء الثابت + bearing, or pre-alarm + رحلة)

رمز الطلب: 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, إشارة خطأ
سيل 1 safety level (DIN EN 50495), suitable for temperature protection of explosion-proof equipment

✅ Electrical Specifications

جهد الإمداد: 24～240V AC/DC wide range

الاتصال المساعد: 1لا + 1نورث كارولاينا (الاتصال التحول), rated thermal current 6A

Sensor type: PTC thermistor (130درجه مئوية / 150℃ PTC embedded in motor windings)

Thresholds: Over-temperature trip >1330أوه; إعادة ضبط <550أوه; sensor short-circuit fault <50أوه

تصاعد: DIN rail snap-on mounting, width 22.5mm

المحطات: محطات المسمار, tightening torque 1.2Nm

Enclosure protection: IP20 (لتركيب الخزانة فقط)

درجة الحرارة المحيطة: Operating -25℃ ~ +60℃ (الأعلى. +45℃ for tightly sealed cabinets)

المعايير: إيك/إن 60947-8, اتيكس, م, أول, شهادة سي سي سي

✅ 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: على سبيل المثال. one channel for winding over-temperature trip, one channel for bearing pre-alarm

Thermal protection for equipment in chemical, الصيدلانية, coal and other explosion hazardous areas

✅ Comparison of Related Series Models

نموذج	رقم الطلب.	لا. of Circuits
EMT6-K	269470	أعزب
EMT6-KDB	269471	مزدوج
EMT6-DB	66167	مزدوج
EMT6-DBK	66168	مزدوج

✅ Troubleshooting Guide

No LED on power-up: Check supply voltage 24~240V AC/DC
Fault LED steady ON:

PTC over-temperature (مقاومة >1330أوه)

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
وظيفة الاختبار: 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)

البديل المحلي: Domestic dual-channel PTC motor protection relay (ملحوظة: 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: -25درجه مئوية ~ +60 درجه مئوية
Sealed cabinet installation (سوء تبديد الحرارة): -25℃ ～ +45℃ (reduced upper limit)
درجة حرارة التخزين: -45℃ ～ +85℃

ملاحظات تكميلية:

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

ك: ATEX explosion-proof certified, supports sensor cable short-circuit detection

ديسيبل: Dual PTC sensor circuit

EMT62: Dual normally open contact version

(230V): Fixed 230V AC supply; no suffix = wide voltage 24~240V AC/DC

نموذج	رقم الطلب.	Sensor Circuits	مزود الطاقة	وصف
EMT6	66166	أعزب	24~240V AC/DC	النموذج الأساسي, no short-circuit detection, non-explosion-proof
EMT6(230V)	66400	أعزب	230الخامس و	Single circuit, fixed 230V power supply
EMT6-DB	66167	مزدوج	24~240V AC/DC	Dual circuit, no short-circuit detection, non-explosion-proof
EMT6-DB(230V)	66401	مزدوج	230الخامس و	Dual circuit, fixed 230V power supply
EMT6-DBK	66168	مزدوج	24~240V AC/DC	Dual circuit with sensor short-circuit detection, no ATEX
EMT6-K	269470	أعزب	24~240V AC/DC	Single circuit, ATEX certified, with short-circuit detection
EMT6-KDB	269471	مزدوج	24~240V AC/DC	Dual circuit + اتيكس + short-circuit detection (target model)
EMT62	171889	أعزب	24~240V AC/DC	Single circuit, dual NO output contacts
EMT62-DB	171890	مزدوج	24~240V AC/DC	Dual circuit, dual NO output contacts

دليل الاختيار السريع

Explosion hazardous area (Ex-e motor) → EMT6-K / EMT6-KDB
صناعة عامة, require sensor cable short-circuit detection → EMT6-DBK
صناعة عامة, 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) الأبعاد المادية

DIN rail mounted; housing dimensions identical across all EMT6 variants

عرض(دبليو): 22.5 مم (nominal 23mm, standard 22.5mm DIN rail module width)

ارتفاع(ح): 83 مم

عمق(د): 103 مم (measured from DIN rail mounting surface to front face)

✅ Weight: 0.13 kg approx.

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