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SIEMENS

Siemens 3RH2911-2FA22 Auxiliary Switch Block, 2 NO + 2 NC, Spring-Loaded Terminal Original Brand New

Model / SKU3RH2911-2FA22

High-reliability auxiliary switch block designed for front mounting on SIRIUS 3RT2 contactors and 3RH2 contactor relays. It features a 2 NO + 2 NC contact configuration and vibration-proof spring-loaded terminals for secure electrical connections in demanding industrial environments.

Original price was: $26.46.Current price is: $11.06.
In stockShips in 1–3 business days
  • ConditionOriginal Brand New
  • Warranty12 months
  • Genuine Products
  • Up to 1-Year Warranty
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Description

Overview

Enhance your control system's versatility with the Siemens 3RH2911-2FA22 auxiliary switch. This front-mounting block provides additional signaling and interlocking capabilities without increasing the footprint of your contactor. As part of the Siemens SIRIUS Innovation family, it ensures seamless integration, high contact reliability, and a long mechanical service life in demanding industrial environments.

Key Benefit

  • Space-Saving Design: Front-mounting allows for easy expansion without taking up additional DIN rail space.

  • Vibration Resistant: The spring-loaded terminal technology ensures a secure connection even in high-vibration machinery, reducing maintenance needs.

  • High Reliability: Engineered for millions of switching cycles, ensuring long-term operational stability.

  • Universal Compatibility: Specifically designed for use with 3RT2 series contactors and 3RH2 contactor relays.

Function & Features

  • Contact Configuration: 4-pole design (2 Normally Open + 2 Normally Closed).

  • Current Paths: Precisely mapped paths (1 NO, 1 NC, 1 NC, 1 NO) for versatile logic wiring.

  • Compatibility: Seamlessly fits Siemens SIRIUS Type 3RT2 (Power Contactors) and 3RH2 (Contactor Relays).

  • Terminal Type: Spring-type terminals for fast, vibration-resistant wiring.

Technical Specification

  • Product Brand: Siemens SIRIUS

  • Model Number: 3RH2911-2FA22

  • Number of Contacts: 4 (2 NO + 2 NC)

  • Mounting Position: Front

  • Connection Method: Spring-loaded

  • Suitable for: 3RT2 Contactors / 3RH2 Relays

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Datasheet in PDF

Specifications

SKU / Model3RH2911-2FA22
BrandSIEMENS
product brand nameSIRIUS
suitability for useContactor relay and power contactor
protection class IP on the frontIP20
ambient temperature-
● during storage-55 ... +80 °C
● during operation-25 ... +60 °C
mechanical service life (switching cycles) typical10 000 000
electrical endurance (switching cycles) at AC-15 at 230 V typical200 000
contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)
insulation voltage with degree of pollution 3 at AC rated value690 V
surge voltage resistance rated value6 kV
number of NC contacts for auxiliary contacts-
● lagging switching0
number of NO contacts for auxiliary contacts-
● instantaneous contact2
● leading contact0
operational current of auxiliary contacts at AC-12-
● at 24 V10 A
● at 230 V10 A
● maximum10 A
● of auxiliary contacts-
— at AC-14-
— at 125 V6 A
— at 250 V6 A
— at AC-15-
— at 230 V6 A
— at 400 V3 A
● at AC-15 at 690 V rated value1 A
● of auxiliary contacts at DC-12-
● with 2 current paths in series at DC-12-
● with 3 current paths in series at DC-12-
operational current-
● of auxiliary contacts at DC-13-
— at 24 V6 A
— at 60 V2 A
— at 110 V1 A
— at 220 V0.3 A
● with 2 current paths in series at DC-13-
● with 3 current paths in series at DC-13-
— at 24 V rated value10 A
— at 60 V rated value4.7 A
— at 110 V rated value3 A
— at 220 V rated value1.2 A
— at 440 V rated value0.5 A
— at 600 V rated value0.26 A
fastening methodsnap-on mounting
type of electrical connection for auxiliary and control circuitspring-loaded terminals
type of connectable conductor cross-sections-
● for auxiliary contacts-
— finely stranded-
— with core end processing2x (0.5 ... 1.5 mm²)
— without core end processing2x (0.5 ... 2.5 mm²)
● at AWG cables for auxiliary contacts2x (20 ... 14)
product function mirror contact acc. to IEC 60947-4-1Yes
product function positively driven operation acc. to IEC 60947-5-1Yes
● notewith 3RH2
Functional Safety/Safety of MachineryMarine / Shipping Test Certificates
last modified:1/18/2021
Weight0.064 kg
Dimensions55.00 × 58.00 × 48.00 mm

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