• Siemens SIRIUS Accessories for 3RQ1/3RQ2 Coupling Relays
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Siemens SIRIUS Accessories for 3RQ1/3RQ2 Coupling Relays

Siemens SIRIUS Accessories for 3RQ1/3RQ2 Coupling Relays

Device connectors, removable terminals, covers, labels and tools for SIRIUS 3RQ1 and 3RQ2 coupling relays in industrial enclosures.

Key features

  • 3ZY12 device connectors and termination connectors for 17.5 and 22.5 mm devices
  • Removable 2-pole screw and push-in terminals
  • Sealing covers, hinged covers, coding pins and wall-mounting lugs
  • Unit labeling plates and screwdriver for spring-loaded terminals

Specifications

Brand line SIRIUS
Suitable for 3RQ1, 3RQ2 coupling relays
Enclosure Industrial DIN-rail enclosure
Source Siemens Catalog IC 10 · 2026, p. 409-413
3ZY1212-1BA00 Item: Device connector | Version: 17.5 mm (3RQ1 24 V DC versions) | PU: 1 unit
3ZY1212-2BA00 Item: Device connector | Version: 22.5 mm (3RQ1 24 V DC versions) | PU: 1 unit
3ZY1212-1DA00 Item: Device termination connector | Version: 17.5 mm | PU: 1 unit
3ZY1212-2DA00 Item: Device termination connector | Version: 22.5 mm | PU: 1 unit
3ZY1212-2AB00 Item: Device daisy chain connector | Version: 24 V DC, 22.5 mm | PU: 1 unit
3ZY1210-2AA00 Item: Device connector (height adjust) | Version: No electrical connection, 22.5 mm | PU: 1 unit
3ZY1122-1BA00 Item: Removable terminal, 2-pole | Version: Screw, 1x4 or 2x2.5 mm2 | PU: 6 units
3ZY1122-2BA00 Item: Removable terminal, 2-pole | Version: Push-in, 1x4 or 2x1.5 mm2 | PU: 6 units
3ZY1321-1AA00 Item: Sealing cover | Version: 17.5 mm | PU: 5 units
3ZY1321-2AA00 Item: Sealing cover | Version: 22.5 mm | PU: 5 units
3ZY1311-0AA00 Item: Push-in lugs for wall mounting | Version: 2 lugs required per device | PU: 10 units
3ZY1440-1AA00 Item: Coding pins | Version: For removable terminals | PU: 12 units
3ZY1450-1BA00 Item: Hinged cover, yellow | Version: 17.5 mm (3RQ1) | PU: 5 units
3ZY1450-1BB00 Item: Hinged cover, yellow | Version: 22.5 mm (3RQ1) | PU: 5 units
3ZY1450-1AB00 Item: Hinged cover, titanium gray | Version: 22.5 mm (3RQ2) | PU: 5 units
AccessoriesSiemens
15 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Siemens SIRIUS Accessories for 3RQ1/3RQ2 Coupling Relays

Brand Siemens·Accessories

Available part numbers (15)

3ZY1212-1BA00, 3ZY1212-2BA00, 3ZY1212-1DA00, 3ZY1212-2DA00, 3ZY1212-2AB00, 3ZY1210-2AA00, 3ZY1122-1BA00, 3ZY1122-2BA00, 3ZY1321-1AA00, 3ZY1321-2AA00 + 5 more — see full table ↓

How to order

Send the Siemens part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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RFQ List (0)
Product codeSpec
3ZY1212-1BA00Item: Device connector | Version: 17.5 mm (3RQ1 24 V DC versions) | PU: 1 unit
3ZY1212-2BA00Item: Device connector | Version: 22.5 mm (3RQ1 24 V DC versions) | PU: 1 unit
3ZY1212-1DA00Item: Device termination connector | Version: 17.5 mm | PU: 1 unit
3ZY1212-2DA00Item: Device termination connector | Version: 22.5 mm | PU: 1 unit
3ZY1212-2AB00Item: Device daisy chain connector | Version: 24 V DC, 22.5 mm | PU: 1 unit
3ZY1210-2AA00Item: Device connector (height adjust) | Version: No electrical connection, 22.5 mm | PU: 1 unit
3ZY1122-1BA00Item: Removable terminal, 2-pole | Version: Screw, 1x4 or 2x2.5 mm2 | PU: 6 units
3ZY1122-2BA00Item: Removable terminal, 2-pole | Version: Push-in, 1x4 or 2x1.5 mm2 | PU: 6 units
3ZY1321-1AA00Item: Sealing cover | Version: 17.5 mm | PU: 5 units
3ZY1321-2AA00Item: Sealing cover | Version: 22.5 mm | PU: 5 units
3ZY1311-0AA00Item: Push-in lugs for wall mounting | Version: 2 lugs required per device | PU: 10 units
3ZY1440-1AA00Item: Coding pins | Version: For removable terminals | PU: 12 units
3ZY1450-1BA00Item: Hinged cover, yellow | Version: 17.5 mm (3RQ1) | PU: 5 units
3ZY1450-1BB00Item: Hinged cover, yellow | Version: 22.5 mm (3RQ1) | PU: 5 units
3ZY1450-1AB00Item: Hinged cover, titanium gray | Version: 22.5 mm (3RQ2) | PU: 5 units

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