Siemens 3RR2142-1AW30 Monitoring Relay 4–40 A, 2-Phase, 24–240 V AC/DC Original Brand New
$104.28
Monitoring relay for Siemens 3RT2 Size S0 contactors with analog apparent current monitoring (4–40 A), 24–240 V AC/DC supply, phase failure detection, cable break detection, ON delay (0–60 s), noise suppression (0–30 s), and 1 change-over contact with screw terminals.
Availability: In stock
Overview
The Siemens 3RR2142-1AW30 is a high-performance monitoring relay designed for precise current monitoring in industrial control systems. Engineered for seamless mounting to Siemens 3RT2 contactors (Size S0), this device ensures reliable operation and long-term stability across a wide range of applications. With analog adjustment and advanced detection features, it provides accurate monitoring of apparent current between 4…40 A at 50/60 Hz, making it ideal for safeguarding motors, equipment, and electrical infrastructure.
Benefit
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Enhanced protection against current overshoot, undershoot, and phase failure
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Easy integration with Siemens 3RT2 Size S0 contactors
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Flexible supply voltage range of 24–240 V AC/DC, suitable for diverse installations
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Improved system reliability using fault buffer and phase-failure detection
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User-friendly configuration with analog adjustment and screw connection system
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Minimizes downtime by detecting cable breaks and noise pulses
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Customizable delay settings for optimized performance (ON delay 0–60 s / noise suppression 0–30 s)
Function
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Apparent Current Monitoring: 4…40 A with high accuracy
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2-Phase Monitoring: Ensures stable performance even in demanding electrical systems
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Fault Detection:
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Current overshoot
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Current undershoot
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Phase failure
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Cable break
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Optional fault buffer
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Output Contact: 1 change-over relay contact
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Adjustable Timers:
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ON delay: 0–60 seconds
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Noise pulse suppression: 0–30 seconds
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Switching Hysteresis: 6% for stable switching behavior
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Connection Type: Reliable screw terminals
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| Weight | 0.260 kg |
|---|---|
| Dimensions | 99.00 × 115.00 × 57.00 mm |
| Brand | SIEMENS |
| product brand name | SIRIUS |
| product designation | Monitoring relays |
| design of the product | analogically adjustable, 2-phase current monitoring |
| product type designation | 3RR2 |
| size of contactor can be combined company-specific | S0 |
| operating apparent power rated value | 4 V·A |
| insulation voltage for overvoltage category III according to IEC 60664 | – |
| ● with degree of pollution 3 rated value | 690 V |
| surge voltage resistance rated value | 6 kV |
| protection class IP | – |
| ● on the front | IP20 |
| ● of the terminal | IP20 |
| shock resistance | 15g / 11 ms |
| vibration resistance | 10 … 55 Hz / 0.35 mm |
| mechanical service life (switching cycles) typical | 10 000 000 |
| electrical endurance (switching cycles) at AC-15 at 230 V typical | 100 000 |
| reference code acc. to IEC 81346-2 | K |
| relative repeat accuracy | 2 % |
| type of voltage of the supply voltage | AC/DC |
| supply voltage 1 at AC | – |
| ● at 50 Hz | 24 … 240 V |
| ● at 60 Hz | 24 … 240 V |
| supply voltage 1 at DC | 24 … 240 V |
| supply voltage frequency 1 | 50 … 60 Hz |
| type of current for monitoring | AC |
| adjustable current response value current | – |
| ● 1 | 4 … 40 A |
| ● 2 | 4 … 40 A |
| adjustable response delay time | – |
| ● when starting | 0 … 60 s |
| ● with lower or upper limit violation | 0 … 30 s |
| temperature drift per °C | 0.1 %/°C |
| protocol is supported IO-Link protocol | No |
| type of voltage supply via input/output link master | No |
| number of CO contacts | – |
| operational current of auxiliary contacts at AC-15 | – |
| ● at 230 V | 3 A |
| ● at 400 V | 3 A |
| operational current of auxiliary contacts at DC-13 | – |
| ● at 24 V | 1 A |
| ● at 125 V | 0.2 A |
| ● at 250 V | 0.1 A |
| contact rating of auxiliary contacts according to UL | B300 / R300 |
| operating power rated value | 2.5 W |
| ampacity of the semiconductor output in SIO mode | 200 mA |
| operational current at 17 V minimum | 5 mA |
| EMC emitted interference acc. to IEC 60947-1 | ambience A (industrial sector) |
| EMC immunity acc. to IEC 60947-1 | ambience A (industrial sector) |
| product component removable terminal for main circuit | No |
| product component removable terminal for auxiliary and control circuit | Yes |
| type of electrical connection | – |
| ● for main current circuit | screw-type terminals |
| ● for auxiliary and control circuit | screw-type terminals |
| ● for main contacts | – |
| ● at AWG cables for main contacts | 2 x (16 … 14), 2x (14 … 8) |
| connectable conductor cross-section for main contacts | – |
| ● solid or stranded | 1 … 10 mm² |
| ● finely stranded with core end processing | 2.5 … 10 mm² |
| type of connectable conductor cross-sections | – |
| ● for auxiliary contacts | – |
| — solid | 1x (0.5 … 4 mm²), 2x (0.5 … 2.5 mm²) |
| — finely stranded with core end processing | 1x (0.5 … 2.5 mm²), 2x (0.5 … 1.5 mm²) |
| ● at AWG cables for auxiliary contacts | 2x (20 … 14) |
| AWG number as coded connectable conductor cross section for main contacts | 16 … 8 |
| tightening torque with screw-type terminals | 0.8 … 1.2 N·m |
| mounting position | any |
| fastening method | direct mounting |
| required spacing | – |
| ● with side-by-side mounting | – |
| ● for grounded parts | – |
| ● for live parts | – |
| — forwards | 6 mm |
| — backwards | 0 mm |
| — upwards | 6 mm |
| — downwards | 6 mm |
| — at the side | 6 mm |
| installation altitude at height above sea level maximum | 2 000 m |
| ambient temperature | – |
| ● during operation | -25 … +60 °C |
| ● during storage | -40 … +80 °C |
| Test Certificates | Marine / Shipping |
| last modified: | 1/18/2021 |
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