3RH1921-1KA20 | second lateral Auxiliary switch, 2 NO contacts, screw terminal, for contactors 3RT1 – Siemens
₹2,150.00 Original price was: ₹2,150.00.₹989.00Current price is: ₹989.00. Excl. GST
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The Siemens 3RH1921-1KA20 is a contact block, engineered for industrial, commercial, and infrastructure applications in demanding Indian and international installations. Buy the 3RH1921-1KA20 | second lateral Auxiliary switch, 2 NO contacts, screw terminal, for contactors 3RT1 online at myelectric.in with GST invoice, genuine-product assurance, and fast delivery across India — bulk and worldwide export enquiries welcome.
📋 Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Part Number / SKU | 3RH1921-1KA20 |
| Category | Contact Block |
| Series / Model | 3RT |
| Contact Configuration | 2 NO (Normally Open) |
| Standard | IEC 60947-4-1, IS 13947 |
| Certifications | BIS certified, CE, cULus (select models) |
⚡ Key Features
- 2 NO (Normally Open) contact arrangement — provides the stated switching capacity for control and signalling circuits.
- IO-Link capable (select models)
- Manufactured to IEC 60947-3 (disconnectors), IEC 60898, IS 13947, IS 8828 — complies with Indian BIS and IEC international safety standards.
- BIS certified, CE, cULus (select models) — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
- Genuine authorised Siemens product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
- GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
- Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.
❓ Frequently Asked Questions
Q: What does the 2 NO (Normally Open) contact configuration on the 3RH1921-1KA20 mean?
A: These contacts change state when the device is operated or energised. Size the contact for the actual switched load — pilot duty ratings are typically lower than the main contact rating.












