Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Siemens Vacuum Interrupters: 3 Contacts Included - Replacement Contacts for Siemens Contactors
SiemensReplacement Contacts for Siemens Contactors

Siemens Vacuum Interrupters: 3 Contacts Included

The SIEMENS Vacuum Interrupters (MPN 3RT1966-6V) are replacement contacts for Siemens contactors, compatible with the 3RT1266 series. This set includes three contacts, designed for use with Siemens 3RT1266 contactors.

SKU 3G-OTH-39158

Brand
Siemens
Item
Vacuum Interrupters: 3 Contacts Included
Category
Replacement Contacts for Siemens Contactors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Siemens
Manufacturer Part Number
3RT1966-6V
Compatible with Series
3RT1266
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Vacuum Interrupters (MPN 3RT1966-6V) are replacement contacts for Siemens contactors, compatible with the 3RT1266 series. This set includes three contacts, designed for use with Siemens 3RT1266 contactors.

Frequently Asked Questions

What is the SIEMENS 3RT1966-6V vacuum interrupter used for?

The SIEMENS 3RT1966-6V vacuum interrupter is a replacement contact set for Siemens 3RT1266 series contactors. It is used in industrial motor control and switching applications where reliable arc extinction in a vacuum environment is required, ensuring long service life and minimal maintenance.

What are the specifications of the SIEMENS 3RT1966-6V vacuum interrupter?

The SIEMENS 3RT1966-6V vacuum interrupter is a replacement contact set compatible with the Siemens 3RT1266 series contactors. It includes three contacts and carries the manufacturer part number 3RT1966-6V. The brand is SIEMENS, and it is designed for use in industrial switching applications.

Where to buy SIEMENS 3RT1966-6V vacuum interrupters worldwide?

You can source SIEMENS 3RT1966-6V vacuum interrupters worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine Siemens replacement contacts for 3RT1266 contactors.

How to install SIEMENS 3RT1966-6V vacuum interrupters?

To install SIEMENS 3RT1966-6V vacuum interrupters, first de-energize the contactor and follow standard safety lockout/tagout procedures. Remove the old contacts and insert the new vacuum interrupter set, ensuring proper alignment with the 3RT1266 series contactor. Torque connections to manufacturer specifications and test operation before returning to service.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens replacement contacts for siemens contactors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SIEMENS Surge Supressor: Surge Supressor, 3RT29161CB00. Key specifications — Manufacturer Part Number: 3RT29161CB00; Brand: SIEMENS; Compatible with Series: 3RT2, S00 Frame Contactors.
Siemens
SIEMENS Surge Supressor: Surge Supressor, 3RT29161CB00. Key specifications — Manufacturer Part Number: 3RT29161CB00; Brand: SIEMENS; Compatible with Series: 3RT2, S00 Frame Contactors.
MI-T-M
MI-T-M
MI-T-M Contactor: Mfr Part # 32-0479, Compatible with Grainger Part # 1RM77/2GXK7/2GXK9/3WB75. Key specifications — Compatible with Manufacturer Model Number: HSE-3504-0M30; Product Type: Contactor; Manufacturer Part Number: 32-0479.
MI-T-M Contactor: Mfr Part # 32-0563, Compatible with Grainger Part # 3WB88. Key specifications — Compatible with Manufacturer Model Number: CA-2503-0E2G-W; Product Type: Contactor; Manufacturer Part Number: 32-0563.
MI-T-M
MI-T-M Contactor: Mfr Part # 32-0563, Compatible with Grainger Part # 3WB88. Key specifications — Compatible with Manufacturer Model Number: CA-2503-0E2G-W; Product Type: Contactor; Manufacturer Part Number: 32-0563.
MI-T-M
MI-T-M
MI-T-M Contactor, 45A 24V Coil: Mfr Part # 32-0328, Compatible with Grainger Part # 1TDJ8. Key specifications — Compatible with Manufacturer Model Number: HEG Series; Product Type: Contactor; Manufacturer Part Number: 32-0328.
MI-T-M Contactor, 30A 3-Pole: Mfr Part # 32-0597, Compatible with Grainger Part # 1TDJ7. Key specifications — Compatible with Manufacturer Model Number: HEG Series; Product Type: Contactor; Manufacturer Part Number: 32-0597.
MI-T-M
MI-T-M Contactor, 30A 3-Pole: Mfr Part # 32-0597, Compatible with Grainger Part # 1TDJ7. Key specifications — Compatible with Manufacturer Model Number: HEG Series; Product Type: Contactor; Manufacturer Part Number: 32-0597.
MI-T-M
MI-T-M
MI-T-M Contactor: Mfr Part # 32-0477, Compatible with Grainger Part # 2GXK8/3WB76. Key specifications — Compatible with Manufacturer Model Number: HHD-3005-0E9G; Product Type: Contactor; Manufacturer Part Number: 32-0477.

More from Siemens

View all Siemens parts →
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1466 (MPN 3RT1966-6D). Key specifications — Compatible with Series: 3RT1466; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1466 (MPN 3RT1966-6D). Key specifications — Compatible with Series: 3RT1466; Brand: SIEMENS.
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1066 (MPN 3RT1966-6A). Key specifications — Compatible with Series: 3RT1066; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1066 (MPN 3RT1966-6A). Key specifications — Compatible with Series: 3RT1066; Brand: SIEMENS.
SIEMENS Vacuum Interrupters: 3 Contacts Included, 3RT1264 (MPN 3RT1964-6V). Key specifications — Compatible with Series: 3RT1264; Brand: SIEMENS.
Siemens
SIEMENS Vacuum Interrupters: 3 Contacts Included, 3RT1264 (MPN 3RT1964-6V). Key specifications — Compatible with Series: 3RT1264; Brand: SIEMENS.
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors (MPN 75GP14). Key specifications — Includes: Movable Contacts; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors (MPN 75GP14). Key specifications — Includes: Movable Contacts; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1456 (MPN 3RT1956-6D). Key specifications — Compatible with Series: 3RT1456; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1456 (MPN 3RT1956-6D). Key specifications — Compatible with Series: 3RT1456; Brand: SIEMENS.
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors, NEMA Size 4 (MPN 75JG14). Key specifications — Includes: Stationary Contacts; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors, NEMA Size 4 (MPN 75JG14). Key specifications — Includes: Stationary Contacts; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors, NEMA Size 2 (MPN 75FP14). Key specifications — Includes: Springs; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Kit: 1 Contacts Included, Siemens Multiple Class Contactors, NEMA Size 2 (MPN 75FP14). Key specifications — Includes: Springs; Compatible with Series: Siemens Multiple Class Contactors; Brand: SIEMENS.
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1055 (MPN 3RT1955-6A). Key specifications — Compatible with Series: 3RT1055; Brand: SIEMENS.
Siemens
SIEMENS Replacement Contact Pieces: 3 Contacts Included, 3RT1055 (MPN 3RT1955-6A). Key specifications — Compatible with Series: 3RT1055; Brand: SIEMENS.