Guangdong Uchi Electronics Co.,Ltd
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- The MZ6T series is applied for motor protection PTC Thermistor
- Product Details
- Company Details
Product Specification
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| Payment Terms |
T/T,Paypal,Western Union,Money gram |
Supply Ability |
5000,000,000PCS Per Month |
| Delivery Time |
5-7 days |
Packaging Details |
Bulk |
| Ptc Curie Temperature |
115±7℃ |
Responsetime |
Milliseconds range |
| Wire Tension |
Under 10N, 10S tension without damage |
Features |
Long life |
| Surface Temp Tolerance |
±7℃ |
Type |
Positive Temperature Coefficient (PTC) Thermistor |
| Max Power |
10mW |
Diameter |
14mm |
| Lead Spacing |
5mm |
Operating Voltage Max |
350V |
| Thcikness |
2.5mm max |
Brand Name |
UCHI |
| Model Number |
MZ6T |
Certification |
UL.VDE,SGS,REACH,CQC,CSA.ISO.ROHS,CUL |
| Place of Origin |
Dongguan，Guangdong,China |
| |
| High Light |
motor protection PTC thermistor
，MZ6T series PTC thermistor
，PTC thermistor with warranty
|
MZ6T Series | PTC Thermistor Dedicated for Motor Protection
Product Overview
The MZ6T series is a wire-harness type PTC thermistor designed in accordance with international standards DIN 44081 / 44082, specially developed for over-temperature protection of motor windings and bearings. Embedded in the three-phase windings of motors, its resistance rises sharply when the temperature approaches the insulation class limit. Combined with a protector to cut off the power supply, it realizes rapid protection against overheating, overload and phase loss. It serves as a standard core temperature control component for industrial motors.
Working Principle
Low resistance at room temperature(R25 ≤ 100Ω / 300Ω), recognized as normal status by the protector;
When the motor overheats and the temperature reaches the operating temperature Tk, the resistance changes sharply to the kilo-ohm level;
Once the protector detects the high-resistance signal, it trips and shuts down immediately to prevent motor burnout;
The resistance automatically drops after cooling down. No replacement is required, and repeated use is available.
Core Features
✅ Standard Compliance: Compliant with DIN 44081/44082, compatible with mainstream temperature control modules (e.g. INT69);
✅ Ultra-compact Size: Chip size only 1.8×0.6 mm, easy to embed into windings without affecting insulation performance;
✅ Fast Response: Operates within
＜5 seconds under thermal overload or phase loss conditions, much faster than traditional thermal relays;
✅ Precise Temperature Control: Tk ranges from 60℃ to 180℃ (5℃ interval), tolerance ±5℃, perfectly matching motor insulation classes (Class B / F / H);
✅ Long-term Stability: Adopts ceramic substrate and insulated packaging, featuring vibration resistance, aging resistance and long service life;
✅ Flexible Installation: MZ6T adopts long lead wire harness design, suitable for winding embedding, bearing surface mounting and other working conditions.
Typical Applications
Industrial motors, water pump / fan motors, compressor motors;
Servo motors, stepping motors, new energy vehicle drive motors;
Transformers, reactors, high-power inductive coils;
Other electromagnetic equipment requiring overheating, overload and phase-loss protection.
Typical Electrical Parameters
| Item |
Single-core (Type E) |
Three-core Series (Type DS) |
| Operating Temperature Tk |
60～180℃ (5℃ step) |
60～180℃ (5℃ step) |
| Resistance at 25℃ (R25) |
≤100Ω |
≤300Ω |
| Resistance at Tk-5℃ |
≤550Ω |
≤1650Ω |
| Resistance at Tk+5℃ |
≥1300Ω |
≥4000Ω |
| Maximum Working Voltage |
DC 25V |
DC 25V |
| Response Time TD |
＜5s |
＜5s |
| Dielectric Strength |
2.5kV |
2.5kV |
Model Example
MZ6T-150-ES: Wire harness type, 150℃, single-core (suitable for Class B/F motors);
MZ6T-180-DS: Wire harness type, 180℃, three-core series connection (suitable for Class H motors).
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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Business Type:
Manufacturer,Exporter
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Total Annual:
1,500,000-2,500,000
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Employee Number:
138~168
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Ecer Certification：
Verified Supplier
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