Description
Danfoss Pressure Switch
Overview
The Danfoss Pressure Switch is a precision-engineered electromechanical device designed for reliable pressure monitoring and control in industrial, refrigeration, and marine applications. Manufactured by Danfoss — a global leader in engineering solutions with over 80 years of innovation — this pressure switch delivers accurate, dependable performance for critical safety and control systems where pressure regulation is essential.
A pressure switch is a sensing device that monitors system pressure and activates an electrical contact when pressure reaches a predefined set point. This makes it an essential component for compressor protection, pump control, alarm systems, and safety shutdown applications. Danfoss offers one of the most comprehensive pressure switch portfolios in the industry, with options covering pressures from low vacuum to 600 bar and temperatures from -50°C to +85°C .
Whether you’re protecting a refrigeration system, monitoring a boiler plant, or controlling a diesel engine, Danfoss Pressure Switches deliver the reliability, durability, and performance you need for safe and efficient operation.
Key Features
| Feature | Description |
|---|---|
| Gold-Plated SPDT Contacts | Corrosion-resistant contacts provide reliable switching even with low signal currents and voltages |
| Multiple Reset Functions | Available with Auto or Manual Reset options for flexible system integration |
| Fail-Safe Construction | High-pressure switches feature double bellows for added safety and reliability in critical applications |
| Wide Pressure Range | Available from low vacuum to 600 bar / 8700 psig, covering diverse application needs |
| Robust Enclosures | IP ratings from IP30 to IP67 for indoor and outdoor installations |
| Multiple Pressure Sensing Elements | Available with bellows, diaphragm, or piston sensing elements for various media and pressure ranges |
| ATEX Certified Options | Suitable for operation in explosive atmospheres (Zone 2), meeting ATEX Directive 2014/34/EU |
| Marine Approvals | Available with approvals from DNV, LR, ABS, BV, RINA, and other classification societies |
| Wide Refrigerant Compatibility | Suitable for R11, R12, R22, R134a, R404A, R407C, R507C, and more |
| Compact & Robust Design | Resistant to shock and vibration, suitable for demanding industrial environments |
Available Series
| Series | Description |
|---|---|
| KP / KPI Series | General-purpose pressure switches for refrigeration and air conditioning systems; protect against excessively low suction pressure or high discharge pressure; available in single and dual versions; IP30 to IP55; gold-plated contacts available |
| KP-E Series | ATEX-certified pressure switches for explosive zones (Zone 2); stainless steel bellows; SPDT gold-plated contacts; fail-safe double bellows on high-pressure models; suitable for HCFC, HFC, and HC refrigerants |
| RT Series | Heavy-duty pressure switches and differential pressure switches for general industrial and marine segments; safety pressure switches dedicated for steam boiler plants; IP66; fail-safe recommended for critical applications |
| KPS Series | High-performance pressure switches with special attention to high enclosure level, robust and compact construction, and resistance to shock and vibration; covers most outdoor and indoor applications; suitable for monitoring alarm and control systems in factories, diesel plants, compressors, power stations, and ships |
| MBC 5000/5100 | Compact pressure switches for industrial applications; up to 600 bar working pressure; piston sensing element; IP65; multiple marine approvals |
| BCP Series | Dedicated pressure switches for safety and pressure monitoring of steam and hot water boilers; incorporates single-pole changeover microswitch |
| CKB Series | Dedicated pressure switches for CO2 (R744) refrigeration systems; high pressure rating up to 143 bar; IP65; SPDT contact function |
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Danfoss |
| Switch Configuration | SPDT (Single Pole Double Throw) / SPDT Gold / 2 SPST(NC) |
| Contact Rating | Up to AC1=10A, 400V; AC15=3-4A, 400V; DC13=12W, 220V |
| Pressure Range | Vacuum to 600 bar / 8700 psig |
| Differential | 0.1 bar to 17 bar (series dependent) |
| Sensing Element | Bellows / Diaphragm / Piston |
| Reset Function | Auto / Manual Max / Manual Min / Max convertible |
| Enclosure Rating | IP30 to IP67 |
| Ambient Temperature | -50°C to +85°C |
| Medium Temperature | -40°C to +150°C (model dependent) |
| Pressure Connection | Flare / G / M / ODF / Welding |
| Connection Size | 1/4″ to 3/8″ |
| Electrical Connection | DIN Plug / Screwed Cable Entry / DIN Spade |
| Certifications | CE, UL, TÜV, CCC, ATEX, Marine (DNV, LR, ABS, BV, RINA) |
Why Choose Danfoss Pressure Switch?
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Trusted Global Brand — Danfoss is a global engineering leader with over 80 years of innovation, known for quality and reliability in refrigeration, HVAC, and industrial automation
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Comprehensive Portfolio — One of the widest selections of pressure switches in the industry, covering applications from low vacuum to 600 bar
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Proven Safety Solutions — Fail-safe designs with double bellows and gold-plated contacts for critical safety applications
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Hazardous Area Options — ATEX-certified KP-E series for operation in explosive zones (Zone 2)
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Marine Approved — Available with approvals from major classification societies for shipboard applications
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Versatile Applications — Suitable for refrigeration, air conditioning, industrial processes, steam boiler plants, diesel plants, compressors, and power stations
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Robust & Reliable — Resistant to shock and vibration with high enclosure ratings for demanding environments
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Easy Installation & Serviceability — Serviceable contact systems and modular accessories for simplified maintenance
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Global Compliance — CE, UL, TÜV, CCC, ATEX, and RoHS certifications for global acceptance
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Made to International Standards — Manufactured under ISO quality management systems to stringent global standards
Ideal Applications
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Refrigeration & Air Conditioning Systems — Compressor protection, high/low pressure control, fan control for air-cooled condensers
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Industrial Process Control — Monitoring and control of pressure in manufacturing and process plants
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Marine & Offshore — Pressure monitoring on ships, offshore platforms, and marine installations
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Diesel Plants & Power Stations — Engine and generator pressure monitoring
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Steam & Hot Water Boilers — Safety pressure monitoring and control
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Compressor Monitoring — Protection against low suction or high discharge pressure
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Alarm & Control Systems — Signaling abnormal pressure conditions for operator intervention
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CO2 Refrigeration Systems — Dedicated CKB series for high-pressure CO2 (R744) applications
Compliance & Standards
| Standard | Description |
|---|---|
| CE Mark | Conforms to European safety requirements |
| UL Listed | Underwriters Laboratories certification (File E31024) |
| TÜV Approved | TÜV certification for safety and quality |
| ATEX | Certified for explosive atmospheres (Zone 2, Category 3) |
| Marine Approvals | DNV, LR, ABS, BV, RINA, CCS, NKK, KRS, RMRS, GL |
| CCC | China Compulsory Certification |
| EAC | Eurasian Conformity |
| RoHS Compliant | Meets Restriction of Hazardous Substances requirements |
| EN 60947 | Low-voltage switchgear and controlgear standard |
| UL 873 | Standard for Temperature-Indicating and -Regulating Equipment |
For detailed product inquiries, technical specifications, bulk order pricing, or to place an order, please contact our sales team.
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