Siemens 3RH2131-1BB40 Contactor Relay, 3NO + 1NC, 24V DC, Screw Terminal, Size S00 Original Brand New
$34.10
SIRIUS contactor relay featuring 3 normally open (NO) and 1 normally closed (NC) auxiliary contacts, powered by a 24V DC coil. It utilizes secure screw terminals and conforms to the Frame Size S00 standard, making it ideal for robust industrial control applications.
Availability: In stock
Overview
The Siemens 3RH2131-1BB40 is a high-performance contactor relay designed for reliable switching and control in industrial automation systems. Featuring 3 normally open (NO) and 1 normally closed (NC) contacts, this relay operates with a 24V DC control voltage and comes with screw terminals for secure and easy installation. Its compact S00 frame size makes it ideal for space-saving control panel designs.
Benefit
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Reliable Siemens Quality – Built for long service life and stable performance
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Compact Design – S00 frame size saves valuable panel space
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Flexible Control – 3 NO + 1 NC contact configuration supports multiple control circuits
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Easy Installation – Screw terminals ensure strong and secure wiring
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Energy Efficient – Optimized 24V DC coil for reduced power consumption
Function and Application
The 3RH2131-1BB40 functions primarily as an auxiliary switching device. Its main uses include:
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Signal Multiplication: Multiplying auxiliary contacts for use in various control loops.
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Interlocking: Creating safety and operational interlocks in motor control circuits to prevent conflicting operations.
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Control Panel Logic: Implementing simple relay logic for machine sequence control.
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Control of Small Loads: Switching indicator lamps, solenoids, or very small motors.
Technical Specification
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Product Number: 3RH2131-1BB40
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Brand: Siemens
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Type: Contactor Relay
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Contact Configuration: 3 NO + 1 NC
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Control Voltage: 24 V DC
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Terminal Type: Screw Terminal
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Frame Size: S00
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Application: Industrial automation & control panels
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| Weight | 0.270 kg |
|---|---|
| Dimensions | 50.00 × 61.50 × 77.50 mm |
| Brand | SIEMENS |
| product brand name | SIRIUS |
| product designation | Auxiliary contactor |
| product type designation | 3RH2 |
| size of contactor | S00 |
| product extension auxiliary switch | Yes |
| insulation voltage with degree of pollution 3 at AC rated value | 690 V |
| degree of pollution | 3 |
| surge voltage resistance rated value | 6 kV |
| shock resistance at rectangular impulse | – |
| shock resistance with sine pulse | – |
| mechanical service life (switching cycles) | – |
| ● of contactor typical | 30 000 000 |
| ● of the contactor with added electronically optimized auxiliary switch block typical | 5 000 000 |
| ● of the contactor with added auxiliary switch block typical | 10 000 000 |
| reference code acc. to IEC 81346-2 | K |
| installation altitude at height above sea level maximum | 2 000 m |
| ambient temperature | – |
| ● during operation | -25 … +60 °C |
| ● during storage | -55 … +80 °C |
| relative humidity minimum | 10 % |
| relative humidity at 55 °C acc. to IEC 60068-2-30 maximum | 95 % |
| no-load switching frequency | – |
| ● at AC | 10 000 1/h |
| type of voltage of the control supply voltage | DC |
| control supply voltage at DC | – |
| ● rated value | 24 V |
| operating range factor control supply voltage rated value of magnet coil at DC | – |
| ● initial value | 0.8 |
| ● full-scale value | 1.1 |
| closing power of magnet coil at DC | 4 W |
| holding power of magnet coil at DC | 4 W |
| closing delay | – |
| opening delay | – |
| ● at DC | 7 … 13 ms |
| arcing time | 10 … 15 ms |
| number of NC contacts for auxiliary contacts | 1 |
| number of NO contacts for auxiliary contacts | 3 |
| ● instantaneous contact | 3 |
| identification number and letter for switching elements | 31 E |
| operational current at AC-12 maximum | 10 A |
| operational current at AC-15 | – |
| ● at 230 V rated value | 10 A |
| ● at 400 V rated value | 3 A |
| ● at 500 V rated value | 2 A |
| ● at 690 V rated value | 1 A |
| operational current at 1 current path at DC-12 | – |
| operational current with 2 current paths in series at DC-12 | – |
| operational current with 3 current paths in series at DC-12 | – |
| operating frequency at DC-12 maximum | 1 000 1/h |
| operational current at 1 current path at DC-13 | – |
| operational current with 2 current paths in series at DC-13 | – |
| operational current with 3 current paths in series at DC-13 | – |
| ● at 24 V rated value | 10 A |
| ● at 60 V rated value | 4.7 A |
| ● at 110 V rated value | 3 A |
| ● at 220 V rated value | 1.2 A |
| ● at 440 V rated value | 0.5 A |
| ● at 600 V rated value | 0.26 A |
| operating frequency at DC-13 maximum | 1 000 1/h |
| design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V | C characteristic: 6 A; 0.4 kA |
| contact reliability of auxiliary contacts | 1 faulty switching per 100 million (17 V, 1 mA) |
| contact rating of auxiliary contacts according to UL | A600 / Q600 |
| design of the fuse link for short-circuit protection of the auxiliary switch required | fuse gL/gG: 10 A |
| mounting position | +/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface |
| fastening method | screw and snap-on mounting onto 35 mm standard mounting rail |
| required spacing | – |
| ● with side-by-side mounting | – |
| ● for grounded parts | – |
| ● for live parts | – |
| — forwards | 10 mm |
| — upwards | 10 mm |
| — downwards | 10 mm |
| — at the side | 6 mm |
| type of electrical connection for auxiliary and control circuit | screw-type terminals |
| type of connectable conductor cross-sections | – |
| ● for auxiliary contacts | – |
| — solid or stranded | 2x (0.5 … 1.5 mm²), 2x (0.75 … 2.5 mm²), 2x 4 mm² |
| — finely stranded with core end processing | 2x (0.5 … 1.5 mm²), 2x (0.75 … 2.5 mm²) |
| ● at AWG cables for auxiliary contacts | 2x (20 … 16), 2x (18 … 14), 2x 12 |
| B10 value with high demand rate acc. to SN 31920 | 1 000 000; With 0.3 x Ie |
| proportion of dangerous failures | – |
| ● with low demand rate acc. to SN 31920 | 40 % |
| ● with high demand rate acc. to SN 31920 | 73 % |
| failure rate [FIT] with low demand rate acc. to SN 31920 | 100 FIT |
| T1 value for proof test interval or service life acc. to IEC 61508 | 20 y |
| protection class IP on the front acc. to IEC 60529 | IP20 |
| touch protection on the front acc. to IEC 60529 | finger-safe, for vertical contact from the front |
| Functional Safety/Safety of Machinery | Test Certificates Declaration of Conformity |
| last modified: | 12/1/2021 |
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