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3G Electric
Danfoss Pressure switch RT 121 - Controls
DanfossControls

Danfoss Pressure switch RT 121

The Danfoss Pressure Switch RT 121 is a pressure-operated control device with unipolar changeover contact, designed for industrial, marine, and boiler safety installations. Operating across a pressure range of −1 to…

SKU 3G-CBM-01872

Brand
Danfoss
Item
Pressure switch RT 121
Category
Controls
UNSPSC
39121026 — Control power transformer
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Danfoss
applications
industrial, marine, boiler safety installations
contact type
unipolar changeover contact
control method
pressure-operated
pressure range
−1 to 0 bar
available variants
standard pressure switches, differential pressure switches, adjustable neutral zone pressure switches
recommended use case critical
safety pressure switches for critical applications
recommended contact coating low duty
gold-plated contacts for low switching frequency or low voltage operation

Technical Documents

(1)
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Danfoss Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Danfoss Pressure Switch RT 121 is a pressure-operated control device with unipolar changeover contact, designed for industrial, marine, and boiler safety installations. Operating across a pressure range of −1 to 0 bar, it delivers contact switching suitable for critical safety applications. 3G Electric sources this unit in Singapore and across Southeast Asia with full DDP logistics handling; variants including standard, differential, and adjustable neutral zone configurations are available to meet specific operational requirements.

Frequently Asked Questions

Where can I buy a Danfoss RT 121 pressure switch worldwide?

3G Electric is an authorized Danfoss distributor offering the RT 121 pressure switch with worldwide delivery. We handle logistics and customs clearance. Contact us for lead times and a quote.

What is the pressure range of the Danfoss RT 121?

The Danfoss RT 121 operates across a pressure range of −1 to 0 bar. It features a unipolar changeover contact for critical safety applications in industrial, marine, and boiler installations.

What are the main applications for the RT 121 pressure switch?

The Danfoss RT 121 is designed for industrial, marine, and boiler safety installations. It is recommended for critical safety pressure control applications requiring reliable pressure-operated switching.

Used in

Common applications for Danfoss
Light-oil industrial burners — OD / OD-H nozzles as scheduled replacement parts
Heating-boiler oil-supply circuits — BFP 10L / 11L / 41L pumps and coupling kits
Burner-rack solenoid valves — EV and EVR series for oil and gas shut-off
Legacy plant troubleshooting — matching a failed burner nameplate to correct Danfoss nozzle/pump combination
Refrigeration pressure controls — KP / RT series for secondary-refrigerant loops
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Danfoss Products

3G Electric supplies Danfoss controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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