3RR2142-1AW30 SIEMENS SIRIUS 3RR - current monitoring relay
3RR2142-1AW30 SIEMENS SIRIUS 3RR - current monitoring relay
SIRIUS current monitoring relay, size S0, analogue adjustment. Two-phase current measurement from 4 to 40 A at 50 to 60 Hz, 24 to 240 V AC/DC supply, 1 changeover contact and screw terminals. Monitors overcurrent, undercurrent, phase failure and wire break. More
Code: 3RR2142-1AW30
SIRIUS current monitoring relay, size S0, analogue adjustment. Two-phase current measurement from 4 to 40 A at 50 to 60 Hz, 24 to 240 V AC/DC supply, 1 changeover contact and screw terminals. Monitors overcurrent, undercurrent, phase failure and wire break. More
Code: 3RR2142-1AW30
3RR2142-1AW30 - current monitoring relay
Siemens 3RR2142-1AW30 is a SIRIUS current monitoring relay. SIRIUS current monitoring relay, size S0, analogue adjustment. Two-phase current measurement from 4 to 40 A at 50 to 60 Hz, 24 to 240 V AC/DC supply, 1 changeover contact and screw terminals. Monitors overcurrent, undercurrent, phase failure and wire break.
Looking to buy or repair this relay?
We will check spare-part availability and the options for diagnosis and professional repair of your faulty relay.
Applications of relay 3RR2142-1AW30
The relay monitors current in motor feeders and other industrial circuits. It allows limits to be set to detect load changes and signal them to the downstream control system. When selecting a relay, compare the measuring range, supply voltage, contactor size, wiring and required monitoring functions.
Siemens technical specifications
| Manufacturer | SIEMENS |
|---|---|
| Order number | 3RR2142-1AW30 |
| Series | SIRIUS 3RR |
| Measured current | 4 ... 40 A |
| Measured current frequency | 50 ... 60 Hz |
| Number of monitored phases | 2 |
| Power supply | 24 ... 240 V AC/DC |
| Contactor size | S0 |
| Adjustment | Analogue |
| Outputs | 1 changeover contact |
| Connection | Screw terminals |
| Mounting | Direct mounting on a suitable SIRIUS 3RT2 contactor |
| Operating ambient temperature | -25 ... +60 °C |
| Dimensions W × H × D | 45 × 87 × 91 mm |
| Net weight | 245,58 g |
Monitoring functions and settings
Monitors current above and below the set limits, phase failure and wire break. Features optional fault memory, an ON delay of 0 to 60 s, noise-pulse suppression from 0 to 30 s and a switching hysteresis of 6%.
Scope of supply
The quotation covers Siemens relay 3RR2142-1AW30. We confirm the exact part condition and scope of supply in the individual quotation. A contactor, temperature sensor, IO-Link master and other separate accessories are not automatically included.
Frequently asked questions
How can I verify the correct replacement?
Send the full order number and a photo of the original relay nameplate. We will check the version; a similar designation alone does not confirm identical power supply, wiring or functions.
Is the relay suitable for every motor feeder?
The current range, supply voltage, contactor size and connection method are decisive. When replacing a relay, compare the full order number and the set limits and time delays.
Do the settings need to be transferred when replacing the relay?
Yes. Record the existing settings before replacement. After installation, check the limits, timing and response of the downstream control system. If changing the relay type, also check the wiring diagram and application requirements.
Can you arrange diagnosis or repair?
Send a fault description and the nameplate details. We will check diagnostic and repair options and spare-part availability. The specific procedure will depend on the condition of the device.
Why buy from FOXON
Spare-part availability
We check current availability and confirm the possible delivery date before you order.
New original and refurbished parts
Depending on current availability, we will check for a new original part or a refurbished version.
Parts with warranty
We confirm the condition of the specific part and warranty terms in the quotation.
Diagnosis and repair
Alongside spare-part purchase, we will also check the options for diagnosing and repairing your faulty relay.
Available part conditions
Depending on availability, we offer new original parts, unused parts from earlier stock, and refurbished or tested used parts. We confirm the available condition, price, scope of supply and warranty before you order. These options do not mean that every condition is currently in stock.
Sales, repairs and purchase of surplus automation parts
We supply spare parts for industrial automation and check the options for diagnosis and repair of faulty equipment. You can also offer us surplus parts for purchase.
Purchase or repair of relay 3RR2142-1AW30
Send the full order number, required quantity and, for repairs, a fault description. We will check spare-part availability and diagnostic and repair options.
Request part purchase or repairHighlighted items are mandatory.