Page 27 - 浙江茂隆电气有限公司

JR28 热过载继电器
Series Thermal Overload Relay
MLDQ ELECTRIC

正常工作条件和安装条件 Normal working conditions and installation conditions

◆ 大气条件：最高温度为 +70℃时，空气相对湿度不超过 50%．在较低温度下可以允许有较高的相对湿度，例如 20℃时达 90%；对由于湿度变化偶尔产
生的凝露应采取特殊的措施；
◆ 安装条件：安装面与垂直面倾斜度不大于 ±5°；
◆ 冲击与振动：产品应安装和使用在无显著摇动、冲击和振动的地方；
◆ Installation category: III;
◆ Pollution level: 3;
◆ Compliance with standards: GB/T 14048.4/IEC 60947-4-1. GB/T 14048.5/IEC 60947-5-1;
◆ Certification mark: CE, CCC;
◆ External and protection level: IP20 (ZQR2-12, 25, 38, 100);
◆ Ambient air temperature: extreme working temperature -35 ℃ ~ +70 ℃ , normal working temperature -5 ℃ ~+40 ℃ , within 24 hours; the
average value does not exceed +35℃ ; if not used in the normal operating temperature range, see for details “Abnormal Environmental
Use Instructions” in the Appendix;
◆ Altitude: no more than 2000m;
◆ Atmospheric conditions: When the maximum temperature is +70℃ , the relative humidity of the air does not exceed 50%. Higher relative
humidity can be tolerated at lower temperatures, for example up to 90% at 20℃ ; special measures should be taken for condensation that
occasionally occurs due to humidity changes;
◆ Installation conditions: the inclination of the mounting surface and the vertical plane is not more than ±5° ;
◆ Impact and vibration: The product should be installed and used in places where there is no significant shaking, shock and vibration;

外形及安装尺寸 Shape and installation dimensions (mm)

W

1/L 1/L 1 3/L 2 5/L 3
1
A
9 STOP RESET
11 10 H
12
TEST T A
H
NO NC
98 97 96 95

2/T1 4/T2 6/T3

L

外形与安装尺寸 Shape and installation size (mm)
规格 specification
L H W
JR28-12 45 73 68
JR28-25 45 67 94
JR28-38 55 82 94
JR28-100 72 83 118

www.maolong.cc • 23