3NA78070RC | Siemens Sentron 3NA7 HRC Fuse Link 20 A, 120 kA, DIN Type, 500 V AC, Size 000 – Siemens

Name: 3NA78070RC | Siemens Sentron 3NA7 HRC Fuse Link 20 A, 120 kA, DIN Type, 500 V AC, Size 000 - Siemens - myelectric.in
Brand: Siemens
SKU: 3NA78070RC
Price: 415.00 INR
Availability: InStock

SKU: 3NA78070RC

Original price was: ₹830.00.Current price is: ₹415.00. Excl. GST

In stock

13 People watching this product now!

Order protection

Buy with complete confidence.

We back each order with genuine supply, on-time dispatch and GST or commercial invoicing as required.

Buyer protection on every order

Global DeliveryShipped pan-India and to export markets.

On-Time DeliveryPacked and dispatched on schedule.

100% OriginalFrom brand-authorised channels only.

GST InvoiceCompliant, ITC-ready tax invoice.

Secure PaymentEncrypted, trusted payment gateways.

Also included Dedicated account manager Technical support Bulk & business pricing 3-day replacement

The Siemens 3NA78070RC is a fuse, engineered for reliable circuit protection and isolation in demanding Indian and international installations. Key ratings include 20 A, 500V AC. Buy the 3NA78070RC | Siemens Sentron 3NA7 HRC Fuse Link 20 A, 120 kA, DIN Type, 500 V AC, Size 000 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	3NA78070RC
Category	Fuse
Current Rating	20 A
Voltage Rating	500V AC
Breaking Capacity	120 kA
Rated Frequency	50/60 Hz
Standards	IEC 60947-3 (disconnectors)
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

20 A current rating — confirmed from product specifications; size wiring and terminals to match or exceed this value.
500V AC operating voltage — compatible with standard LV distribution voltages used in Indian industrial installations.
120 kA short-circuit withstand or breaking capacity — protects the installation at high fault current levels.
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 is the significance of the 20 A rating on the 3NA78070RC?

A: The 20 A rating is the device’s maximum continuous current carrying capacity under specified conditions (typically 40°C ambient). For circuit design, use 80% of this value as the design current to allow for derating due to grouping, temperature, and future load growth.

Q: What does the 120 kA breaking capacity on the 3NA78070RC mean in practice?

A: Breaking capacity (120 kA) is the maximum prospective short-circuit current the 3NA78070RC can safely interrupt without damage. Before installing, verify that the prospective fault level at the installation point does not exceed 120 kA — this is checked using a fault level calculation or from the upstream transformer impedance data. Installing a breaker with insufficient breaking capacity is a serious safety violation.

Q: After a short-circuit trip on the 3NA78070RC, can it be reset and reused immediately?

A: After a short-circuit trip, do not immediately reset the 3NA78070RC. First, identify and clear the fault. Then inspect the device — if there is visible arc damage, melted insulation, or the handle does not reset smoothly, the device must be replaced. The 120 kA rated breaking capacity is not unlimited — it is the maximum fault current the device can interrupt safely for a defined number of operations (typically 1–3 at full Icu rating). After any significant fault, factor replacement into your maintenance budget.