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        X20BM21

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        B&R X20BM21 is a double-width 24 VDC-keyed power-supply bus module that interrupts the internal I/O supply to the left for the X20 System.
        In Stock
        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for X20BM21

        • Manufacturer:
          B&R
        • Part Number:
          X20BM21
        • Product Family:
          B&R X20 System
        • Product Type:
          Double-width Power Supply Bus Module
        • Stock:
          1
        • Module width:
          Double-width
        • Bus-module keying:
          24 VDC
        • I/O supply nominal voltage:
          24 VDC
        • Permissible contact load:
          10 A
        • Bus power consumption:
          0.13 W
        • Module pitch:
          25 mm +0.2 mm
        • Mounting orientation:
          Horizontal or vertical
        • Degree of protection:
          IP20
        • Operating temperature:
          -25 to 60 °C horizontal; -25 to 50 °C vertical
        • Storage / transport temperature:
          -40 to 85 °C
        • Relative humidity:
          5 to 95%, non-condensing
        • Tariff Code:
          8538900000
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Potential Group Compatibility Power Path Application
        • Provides the base for double-width X20 I/O modules
        • Interrupts the internal I/O supply to the left
        • Supports a separate voltage group with the documented feed arrangement

        X20BM21 is a B&R double-width power supply bus module designed for the X20 System.

        The module establishes the mechanical base and potential-group boundary required by compatible double-width X20 modules, including the documented X20BT9100 supply arrangement.

        Before installation or replacement, verify the complete material number, double-width electronic-module compatibility, 24 VDC keying, left-side I/O-supply interruption, the intended feed source, X20BT9100 requirements where applicable, 10 A contact-load limit, terminal block, and station layout.

        Availability, condition, price, and shipping time for X20BM21 are confirmed during quotation.

        B&R X20BM21 Double-width Power Supply Bus Module Manuals, Datasheets, Links

        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        • The left-side internal I/O supply is interrupted
        • A separate voltage group can be established
        • The new group requires the documented supply arrangement
        • The module is intended for double-width X20 I/O modules
        • Its mechanical pitch is 25 millimeters plus tolerance
        • Keying and terminal-block compatibility must be checked together
        • The bus module defines a supply boundary
        • The new group must be fed from the intended source
        • The 10 ampere contact-load limit remains applicable
        • Separate 24 VDC potential groups in X20 stations
        • Double-width X20 module installations
        • X20BT9100 arrangements requiring an isolated left-side I/O supply
        Description
        X20BM21 is a B&R double-width power supply bus module for the X20 System.

        It provides the base for double-width X20 I/O modules and isolates the internal I/O supply from the modules to its left so that a separate voltage group can be created when the documented feed arrangement is used.

        Before installation or replacement, confirm the complete material number, double-width electronic-module compatibility, 24 VDC keying, left-side I/O-supply interruption, the intended feed source, X20BT9100 requirements where applicable, 10 A contact-load limit, terminal block, and station layout.
        Alternative Names
        X20BM21 X20 BM21 X20-BM21 B&R X20BM21 BR X20BM21 B&R X20 BM21 X20 System X20BM21
        Technical notes
        X20BM21 is a double-width power-supply bus module that interrupts the internal I/O supply to the left. Verify the intended new voltage group, compatible double-width module, feed arrangement, 24 VDC keying, terminal block, and 10 A contact-load limit before installation.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Why would a designer use B&R X20BM21 in an X20 station?
        It is used when a compatible double-width module needs a new voltage group because X20BM21 interrupts the internal I/O supply to the left.
        Can B&R X20BM21 replace a standard-width bus module?
        Not as a direct substitution. It is a 25 mm double-width base, so verify the electronic module, terminal block, station spacing, and supply arrangement.
        What should be checked if the new group on B&R X20BM21 has no power?
        Verify the separate feed source, upstream protection, X20BT9100 arrangement where used, terminal mapping, module seating, and potential-group design.
        Does B&R X20BM21 pass the left-side I/O supply through?
        No. The internal I/O supply is interrupted to the left, which is the defining feature used to create a separate voltage group.
        Can B&R X20BM21 be used with 240 VAC-keyed modules?
        No. It is 24 VDC keyed and must be matched with the approved double-width electronic module and terminal block.
        What load check is required for B&R X20BM21?
        Calculate the current carried through the relevant contacts for the entire new group and keep it within the documented 10 A contact-load limit.
        What should be documented before replacing B&R X20BM21?
        Record the complete slice position, double-width module, terminal block, group feed, protection, adjacent potential groups, wiring, and station power calculation.

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