Dold Frequency Monitoring Relay, SPDT, DIN Rail
- RS Stock No.:
- 181-2792
- Mfr. Part No.:
- MK9143N.38 +/-5Hz UH=AC230V tv=0-20s tan=0-30s
- Manufacturer:
- Dold
Subtotal (1 unit)*
HK$2,439.66
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Temporarily out of stock
- Shipping from 15 January 2026
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Units | Per unit |
|---|---|
| 1 + | HK$2,439.66 |
*price indicative
- RS Stock No.:
- 181-2792
- Mfr. Part No.:
- MK9143N.38 +/-5Hz UH=AC230V tv=0-20s tan=0-30s
- Manufacturer:
- Dold
Specifications
Product overview and Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Dold | |
| Monitoring Application | Frequency | |
| Contact Configuration | SPDT | |
| Mounting Type | DIN Rail | |
| Time Delay | 0 → 20 s, 0 → 30s | |
| Frequency Sensing Range | ±5Hz | |
| Series | MK9143N | |
| Frequency Sensitivity | Overfrequency, Underfrequency | |
| Minimum Operating Temperature | -20°C | |
| Terminal Type | Screw | |
| Height | 90mm | |
| Operating Temperature Range | +60°C | |
| Minimum Frequency Sensed | -5Hz | |
| Dimensions | 97 x 22.5 x 90mm | |
| Width | 22.5mm | |
| Maximum Frequency Sensed | +5Hz | |
| Length | 97mm | |
| Maximum Operating Temperature | +60°C | |
| Select all | ||
|---|---|---|
Brand Dold | ||
Monitoring Application Frequency | ||
Contact Configuration SPDT | ||
Mounting Type DIN Rail | ||
Time Delay 0 → 20 s, 0 → 30s | ||
Frequency Sensing Range ±5Hz | ||
Series MK9143N | ||
Frequency Sensitivity Overfrequency, Underfrequency | ||
Minimum Operating Temperature -20°C | ||
Terminal Type Screw | ||
Height 90mm | ||
Operating Temperature Range +60°C | ||
Minimum Frequency Sensed -5Hz | ||
Dimensions 97 x 22.5 x 90mm | ||
Width 22.5mm | ||
Maximum Frequency Sensed +5Hz | ||
Length 97mm | ||
Maximum Operating Temperature +60°C | ||
- COO (Country of Origin):
- DE
Monitoring of local generator sets and voltage supplies
For precise frequency measuring with fast response time
High disturbance immunity
Separately adjustable trip points and separate outputs for over-
and under frequency (1 or 2 c/o each)
MK 9143N / MH 9143:
Trip points adjustable precisely and reproducible on 10 step rotational switch in the range of ± 0,1 Hz to ± 5 Hz related to 50 or 60 Hz
Nominal frequency 50 or 60 Hz selectable
Fixed hysteresis optimised for trip point
As option one common output for under and over frequency “Window”-mode (MK 9143N/400 / MH 9143/400)
Variable alarm value in the range of 45 to 65 Hz
Hysteresis adjustable for under- and over frequency separatelyadjustable 0 …20% Common output for under and over frequency “Window”-mode can be selected
Start up delay 0…30 s selectable
Manual or auto reset selectable
Output relay energized or de-energized on trip selectable for
over frequency
Output relay de-energized on trip for under frequency
Universal frequency measuring input for AC 40 … 550V
Several options for auxiliary supply
LED indicators for auxiliary supply, input frequency, over and
under frequency alarm
For precise frequency measuring with fast response time
High disturbance immunity
Separately adjustable trip points and separate outputs for over-
and under frequency (1 or 2 c/o each)
MK 9143N / MH 9143:
Trip points adjustable precisely and reproducible on 10 step rotational switch in the range of ± 0,1 Hz to ± 5 Hz related to 50 or 60 Hz
Nominal frequency 50 or 60 Hz selectable
Fixed hysteresis optimised for trip point
As option one common output for under and over frequency “Window”-mode (MK 9143N/400 / MH 9143/400)
Variable alarm value in the range of 45 to 65 Hz
Hysteresis adjustable for under- and over frequency separatelyadjustable 0 …20% Common output for under and over frequency “Window”-mode can be selected
Start up delay 0…30 s selectable
Manual or auto reset selectable
Output relay energized or de-energized on trip selectable for
over frequency
Output relay de-energized on trip for under frequency
Universal frequency measuring input for AC 40 … 550V
Several options for auxiliary supply
LED indicators for auxiliary supply, input frequency, over and
under frequency alarm