Quick Details
- Place of Origin: Zhejiang, China (Mainland)
- Brand Name: suntree/OEM
- Model Number: 3RU
- Theory: Thermal Relay
- Usage: Protective
- Size: Miniature
- Protect Feature: Sealed
- Contact Load: Low Power
- rated insulation voltage: 660V
- rated current: 12.5A-630A
- type: 3UA/LR1/LR2/T/JR20/JR36
- STANDARD: IEC60947-4
- Price: Competitive
- quality: Stable and reliable
- class: A,B
- Certification: CE,ISO9001
- PHASE: 3
- PROTECT FEATURE: SEALED
Application
S3RU series thermal overload relay are suitable for overload and
phase-failure protection of AC motors with frequency of 50/60Hz,
voltage up to 690V, current up to 0.1-100A under 8-hours duty or
uninterrupted duty.
Several functions provided by these relays, are phase-failure
protection, temperature compensation, ON/OFF indication, Stop
button ,Test button and manual/automatic reset.
Applicable Standards:National Standard:GB14048. International
Standards:IEC609474-1 The relays can be mounted onto contactors
or installed as single units.
Operating conditions
- The altitude couldn't exceed 2000m;
- Ambient temperature:-5℃ ~+55℃ and the average temperature no more than +35℃ in 24 hours;
- Atmosphere:Comparative humidity no more than 50% at max +40℃ , and it may be higher at a lower temperature. The lowest average temperature no more than+20℃ in the wettest month. The maximum average comparative humidity of this month couldn't exceed 90%,The change of temperature leading to dew on the product must be considered;
- Class of pollution:Class 3;
- The slope between installation surface and vertical surface couldn't exceed ±5°;
- Keeping away from explosive, corrosive and electric atomy;
- Keeping dry;
- The product should be used and installed at certain place without any shock, vibration etc.
Features
- Three-phase thermal relays with release class 10A;
- With differential phase-failure protection;
- With continuous current adjusting scale;
- With temperature compensation;
- With ON/OFF indicator;
- With TEST (OFF) button;
- With Manual/Auto reset button;
- With Auxiliary contacts 1NO+1NC insulated each other;
- Mounting:plug in connection with contactor or install as a single unit.
Protection characteristics