Image shown may not reflect the final product
Check similar products or call us on +44 20 4570 3439 for assistance
Image shown may not reflect the final product
Check similar products or call us on +44 20 4570 3439 for assistance
Express shipping
Lightning fast shipping if ordered within 00:00:00
Hassle-free returns
No hidden fees or duties
Swift dispatch and delivery
Specification & Description
| Specification | Description |
|---|---|
| Part Number | KFA6-SR2-EX1.W |
| Alternative Part Number | KFA6SR2EX1W |
| Manufacturer | Pepperl + Fuchs |
| Supply Voltage | 207 ... 253 V AC, 45 ... 65 Hz |
| Power Loss | 1 W |
| Power Consumption | ≤ 1 W |
| Signal Type | Digital Input |
| Input Connection | Terminals 1+, 2+, 3- |
| Rated Values | Acc. to EN 60947-5-6 (NAMUR) |
| Open Circuit Voltage | Approx. 8 V DC |
| Short-Circuit Current | Approx. 8 mA |
| Switching Point/Hysteresis | 1.2 ... 2.1 mA / Approx. 0.2 mA |
| Line Fault Detection | Breakage I ≤ 0.1 mA, Short-Circuit I > 6 mA |
| Pulse/Pause Ratio | ≥ 20 ms / ≥ 20 ms |
| Output Connection | Terminals 7, 8, 9 |
| Output Signal | Relay |
| Contact Loading | 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load |
| Energised/De-energised Delay | Approx. 20 ms / Approx. 20 ms |
| Mechanical Life | 10^7 switching cycles |
| Switching Frequency | < 10 Hz |
| Electrical Isolation | Input/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
| Ambient Temperature | -20 ... 60 °C (-4 ... 140 °F) |
| Degree of Protection | IP20 |
| Dimensions | 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 in), housing type B2 |
| Mounting | On 35 mm DIN mounting rail acc. to EN 60715:2001 |
| EC-Type Examination Certificate | PTB 00 ATEX 2081 |
| Approvals | ¬ II (1)G [Ex ia Ga] IIC, ¬ II (1)D [Ex ia Da] IIIC, ¬ I (M1) [Ex ia Ma] I |
| Input | Ex ia |
| Voltage Uo | 10.6 V |
| Current Io | 19.1 mA |
| Power Po | 51 mW (linear characteristic) |
| Maximum Safe Voltage Um | 253 V AC (Attention! Um is no rated voltage.) |
The Pepperl + Fuchs KFA6-SR2-EX1.W is a high-quality switch amplifier designed to facilitate the safe and efficient transfer of digital signals from hazardous areas to safe areas. This one-channel isolated barrier is equipped with a 230 V AC supply and is compatible with both dry contact and NAMUR inputs. It features a relay contact output and is capable of line fault detection (LFD), enhancing operational reliability.
This switch amplifier is engineered to support a reversible mode of operation, allowing for flexibility in signal processing. The robust design ensures a mechanical life of 10^7 switching cycles, making it a durable choice for industrial applications. With a compact footprint of 20 x 119 x 115 mm, it is designed for easy mounting on a 35 mm DIN rail, ensuring a straightforward installation process.
The device is also suitable for use in safety-related applications, with a capability of up to SIL2 according to IEC 61508/IEC 61511 standards. The KFA6-SR2-EX1.W is meticulously crafted to provide reinforced insulation between input, output, and power supply, ensuring a high degree of electrical safety and compliance with international standards.
Ideal for a variety of industrial settings, this switch amplifier is a reliable component for system integrators and engineers looking to maintain signal integrity and safety in challenging environments.
Commonly Asked Questions
Is my order covered by a warranty?
Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
Read more...What payment methods do you accept?
We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.
Read more...Is Marvo a credible parts supplier?
Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.
Read more...Have steps been taken to ensure quality control?
Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.
Read more...How do I create an account?
Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.
Read more...Peace of mind with every purchase
Anna
‘I can recommend quick, efficient, and professional.’
Martin Ruml
‘Rapid delivery.’
Blažej Knežo
‘Quick response and fast delivery of the product.’
Martin Juřica
‘Fast offer, short delivery time.’
Andreas Boehm
‘Excellent service. The right gear and the right price,well packed and delivered on time.’
Advance Lifts
‘Great customer service , we needed some assistance quickly and received it.’
Martin Ruml
‘Rapid delivery.’
Kayden
‘Services is great.’
Advance Lifts
‘Great customer service , we needed some assistance quickly and received it.’
Similar Products
Our service to you
Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.
No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.
Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.
Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.
Frequently Asked Questions
What is the purpose of the Switch Amplifier?
The Switch Amplifier is designed for intrinsic safety applications, transferring digital signals from hazardous areas to safe areas. It's commonly used to interface NAMUR sensors or mechanical contacts with control systems.
Can this device be used with both AC and DC signals?
The device is primarily designed for use with a 230 V AC supply. It is capable of switching both AC and DC loads at the output, with specific ratings for resistive loads provided in the technical specifications.
Is the Switch Amplifier suitable for use in explosive environments?
Yes, the device has certifications for use in potentially explosive atmospheres, making it suitable for applications in hazardous areas.
What type of input signal does the device accept?
The device accepts digital input signals, compatible with dry contact or NAMUR sensors, which are commonly used for detecting the presence or absence of an object.
How does the device indicate operational status?
The device features LED indicators for power supply, output status, and line fault detection, providing visual feedback on the operational status.
What is the ambient temperature range for the operation of the Switch Amplifier?
The device can operate within an ambient temperature range of -20 to 60 °C, making it suitable for a variety of industrial environments.
What is the significance of the line fault detection feature?
Line fault detection is a safety feature that monitors the field circuit for open circuits or short circuits, ensuring the integrity of the connection to the hazardous area.
How can the mode of operation be changed on the device?
The mode of operation can be reversed using an onboard switch, allowing flexibility in configuring the device according to the specific needs of the application.
What certifications does the Switch Amplifier hold?
The device holds several international certifications, including ATEX, IECEx, FM, UL, and CSA, ensuring compliance with global safety standards.
What is the mechanical life expectancy of the device's relay contacts?
The relay contacts in the device have a mechanical life expectancy of 10^7 switching cycles, indicating a long service life under typical operating conditions.
Part conditions explained
We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:
New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.
New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
