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Omron D4BL-4DRA-A

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£343.28 (ex. VAT)

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Marvo Stock ID MV-3AI4
HS Code 853650
SKU D4BL-4DRA-A
Condition New unboxed
Warranty 12 months
Weight (kg) 2.00
Length (mm) 300.00
Width (mm) 190.00
Height (mm) 150.00

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Specification & Description

Specification Description
Part Number D4BL-4DRA-A
Alternative Part Number D4BL4DRAA
Part Manufacturer Omron
Part Category Safety Interlock Switch
Conduit Outlet M20
Voltage for Solenoid 24 VDC
Contact Configuration 2NC (slow-action) + 1NC (slow-action)
Indicator Equipped with an orange/green LED display unit
Degree of Protection IP67 (EN60947-5-1)
Mechanical Durability 1,000,000 operations min.
Electrical Durability 500,000 operations min. (10 A resistive load at 250 VAC)
Operating Speed 0.05 to 0.5 m/s
Operating Frequency 30 operations/minute max.
Direct Opening Force 19.61 N min. (EN60947-5-1)
Direct Opening Travel 20 mm min. (EN60947-5-1)
Holding Force 700 N min. (GS-ET-19)
Contact Resistance 50 mΩ max.
Rated Insulation Voltage (Ui) 300 V (EN60947-5-1)
Ambient Operating Temperature –10 to 55°C (with no icing)
Ambient Operating Humidity 95% max.
Weight Approx. 800 g
Solenoid Coil Characteristics 24 VDC models with approx. 300 mA current consumption and Class B insulation (130°C or less)
Indicator Characteristics 10 to 115 VAC/VDC with approx. 1 mA current leakage, featuring orange and green LEDs
Head Mounting Direction Four mounting directions possible
Door Lock and Release Mechanical lock with 24 VDC solenoid release
Operation Key Types Horizontal mounting (D4BL-K1), Vertical mounting (D4BL-K2), Adjustable mounting (Horizontal) (D4BL-K3)

The Omron D4BL-4DRA-A Safety Interlock Switch is a robust and reliable component designed to enhance the safety of industrial machinery. This switch is engineered to keep protective doors closed until machinery has completely stopped, ensuring a high level of safety for operators. It features a mechanical lock that is automatically applied when the operation key is inserted and can only be released when voltage is applied to the solenoid, providing a controlled and secure environment for maintenance or emergency situations.

Constructed with a durable aluminium die-cast body, the D4BL-4DRA-A is enclosed in a switch box that meets IP67 standards, making it resistant to dust and water ingress, and suitable for use in harsh industrial settings. The switch also boasts a direct opening mechanism for its NC contacts, which is certified to EN standards, ensuring that it will reliably break the circuit when the protective cover is opened.

For added versatility, the D4BL-4DRA-A comes equipped with both horizontal and vertical conduit entries, making installation and wiring straightforward. It also offers the convenience of an adjustable operation key for swinging doors and the ability to change the mounting direction of the head, allowing for four different key insertion directions to suit various door configurations.

The Omron D4BL-4DRA-A is a safety interlock switch that not only provides peace of mind through its certified safety features but also offers the flexibility and durability needed for consistent operation in the demanding world of industrial automation.

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.

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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.

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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.

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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.

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Frequently Asked Questions

What is the function of the Safety Interlock Switch?

The Safety Interlock Switch is designed to ensure that machine guards or safety doors are in place and properly closed before machinery can be operated. It provides a high level of safety by locking the protective doors and only releasing them when the correct conditions are met, such as when voltage is applied to the solenoid.

Can the head of the switch be mounted in different directions?

Yes, the head of the switch can be changed to allow the operation key to be inserted from four different directions, providing flexibility in mounting and ease of integration into various machine designs.

What type of protection does the switch offer against dust and water?

The switch is housed in a tough aluminium die-cast body with a degree of protection satisfying IP67, meaning it is protected against dust and temporary immersion in water, making it suitable for use in harsh industrial environments.

How can I confirm if the protective door is locked or unlocked?

Models with indicator units can be used to confirm the locked or unlocked status of the protective door. The indicators can show the open/closed status of the door, the ON/OFF status of the power supply, and the ON/OFF status of the solenoid.

What should be done in case of a power failure to release the lock?

The switch comes with an auxiliary release key that can be used to manually unlock the door in the event of a power failure, ensuring maintenance personnel can safely access the machinery.

Is the switch certified to any safety standards?

Yes, the switch conforms to EN (TÜV) standards corresponding to the CE marking and is also certified by UL, CSA, and CCC standards, ensuring compliance with international safety regulations.

What is the importance of the direct opening mechanism in this switch?

The direct opening mechanism is a safety feature that ensures the contacts of the switch will open directly in the event of a protective cover being opened. This mechanism is EN-certified and is indicated by a special mark on the switch.

How is the solenoid of the switch powered and what should be considered during wiring?

The solenoid operates at 24 VDC and it's important to confirm the polarity before wiring, as the solenoid terminals are polarity sensitive. Proper connection is crucial for the correct operation of the switch.

What are the operating and reset forces for the Safety Interlock Switch?

The operating and reset forces for the switch are both a maximum of 19.61 N, ensuring reliable operation and reset actions for the safety mechanism.

Can the switch be used outdoors or in environments with potential chemical contamination?

While the switch has a robust IP67 rating, it is not recommended for use in environments where it can be continuously exposed to harsh chemicals or extreme weather conditions. It's best to assess the suitability of the switch for such environments on a case-by-case basis.

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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.

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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.

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