JRS1 series thermal overload relay are suitable for overload and phase failure protection of AC motors with frequency of 50/60Hz,voltage up to 690v, curent up to 0.1 80A under 8 hours duty or uninterrupted duty. Functions provided by these relays, are phase failure protection, ON/OFF indication, temperature compensation, and manual/automatic reset. Applicable Standards: National Standard: GB 14048. International Standard: IEC 60947 4 1 The relays can be mounted onto contactors or installed as single units.
The altitude couldn't exceed 2000m.
Ambient temperature: -5°C～＋55°C and the average temperature no more than+35°Cin 24 hours.
Atmosphere: Comparative humidity no more than 50% at max +40?, and it maybe higherat a lower temperature. The lowest average temperature no more than+20 in the wettest month. The maximum average comparative humidity of thismonth couldn't exceed 90%, The change of temperature leading to dew on theProduct 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.
The product should be used and installed at certain place without any shock,vibration etc.