Current monitoring relay MRI01T & MRI05T
This range of current monitoring relays are used for the control of AC and DC current signal in various industrial and domestic applications. The measuring part of the instrument is metallically separated from the current connection terminals. The monitoring relays MRI range have one double-throw output contact up to 16 A.
- direct measuring range MR01T in range of 0.1 ... 1 A
- direct measuring range MR05T in range of 0.5 ... 5 A
- galvanic insulated measuring inputs
- output relay contact 16 A
- universal power supply 89-264 VAC
- small dimension 1-module on DIN rail
- optical status LED signalization
Function
If the set current value is exceeded, the output relay is switched. If the magnitude of the measured current returns below the set level minus a fixed hysteresis of 10%, the output relay turns off. If a time is also set, the relay will be switched off only after the set time 't' has elapsed. Hysteresis eliminates the oscillation of the relay at current limit values. The OFF position switches off the current measurement, the output relay is switched off, the yellow LED is off. Closed contact 16-15.
Technical features
| Parameter | Value |
|---|---|
| supply voltage | 89 ... 264 VAC |
| measuring current range | 0.1 A ... 1 A / 0.5 ... 5 A |
| measuring terminals over loading | max 1.3 IN |
| time setting range | 0 ... 15 min |
| self consumption | max. 1.5 VA |
| number and type of contacts | 1 x changeover |
| nominal current | 16 A |
| switching power | max. AC 4000 VA |
| trigger current | 30 A |
| nominal/max switching voltage | 250 VAC / 440 VAC |
| mechanical lifetime | 3 x 107 |
| electrical lifetime | 1 x 105 250 VAC, 8 A |
| ambient temperature | -20 ... +55 °C |
| working position | any |
| mounting | IEC 60715 (DIN 35) |
| protection degree | IP 20 |
| Electrical strength | 4 kV |
| Electrical strength measuring terminals/supply terminals | 4 kV |
| Průřez připojovacích vodičů s/bez dutinky | max. 2 x 1.5 mm2; 1 x 2.5 mm2 |
| weight | 85 g |
| dimensions | 90 x 18 x 65 mm |
| related standards | IEC 60255-1 |