803-B4

Rated 4.8 with 14 reviews
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803-B4

Revisions: Ser A 
Description: The Allen-Bradley 803-B4 has 4 Circuits, 10 Amps, and a 150 rpm Max. Shaft Speed. It also contains a Snap Action 1 N.O.-1 N.C. Contact and 2-12 Independent Cam Operators.
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Description: The Allen-Bradley 803-B4 has 4 Circuits, 10 Amps, and a 150 rpm Max. Shaft Speed. It also contains a Snap Action 1 N.O.-1 N.C. Contact and 2-12 Independent Cam Operators.

Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via DHL, UPS, Fedex, and TNT
Repairs: We offer repair service for the 803-B4.
Exchange: Exchange credit for your defective unit available.

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Rated 4.8 with 14 reviews

    Technical Specifications for 803-B4

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.803-B4
Product TypeRotating Cam Limit Switch
Style of DeviceB
Circuits4
ModificationN/A
Modification 2N/A
ListingThis specification list has been compiled by DO Supply.
Modification 3N/A
Enclosure Type1
Amps10
ContactSnap Action 1 N.O.-1 N.C.
Cam Operators2-12 Independent
Max. Shaft Speed150 rpm
Cam Duration14°-346°
Extension StandardLeft Shaft
ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.803-B4
Product TypeRotating Cam Limit Switch
Style of DeviceB
Circuits4
ModificationN/A
Modification 2N/A
Modification 3N/A
Enclosure Type1
Amps10
ContactSnap Action 1 N.O.-1 N.C.
Cam Operators2-12 Independent
Max. Shaft Speed150 rpm
Cam Duration14°-346°
Extension StandardLeft Shaft
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About 803-B4

The 803-B4 Rotating Cam Limit Switch is a circuit control switch by Allen-Bradley which are used for control of machinery with dedicated operational cycles, in industrial processes where machine motion is determined by the cam switch’s shaft rotation. It makes uses of its shaft-mounted cam which produces actuation as the shaft rotates, and it is suitable for heavy-duty operations with its long life and minimal maintenance needs. The device is a control switch in the Style “B” series, and it has 3 circuits with a snap-action contact block, and it comes with a contact-mounted spring-loaded cam-roller assembly. The 803-B4 has 3 independently-operated cam assemblies with variable heavy-duty higher and lower cam segments, and a 150 RPM rotating shaft, on which the cam is mounted. It has a keyway (shaft slot) which is used for connecting machines to the driven shaft, and like all Style “B” switches, it comes with a factory standard left shaft extension. The circuit is activated when the shaft rotates, driving the upper cam segment against the cam roller, thereby opening contact 1 and 2 of the 10A snap-action contact, and closing contacts 3 and 4, and the circuit is de-activated as the cam valley (lower cam segment) passes by the cam roller.



The 803-B4 has a timing measured in degree, which is the moment when the cam activates the circuit, and a cam dwell time, which is the amount of time for which the cam lobe activates the circuit, and it is determined by the size of the cam lobes. Both the dwell and timing can be internally adjusted when the machine is not in motion, and the timing can be set a total range of 14 to 346 degrees, and the settings of the dwell and timing determine machine’s operation. The device has a cast iron side plate, and it comes with a NEMA Type 1 rated enclosure. The 803-B4 has a working temperature range of -30 to 66 degrees Celsius (-22 to 150 degrees Fahrenheit), with a storage range of -30 to 93 degrees Celsius (-22 to 200 degrees Fahrenheit), and it is built for rugged, and heavy-duty operations like steel forming, packaging/assembling, and punch presses operations. The 803-B4 weighs approximately 10.9 kilograms (24 pounds), with total dimensions of 144.5 x 82.6 x 177.8 millimeters (5.69 x 3.25 x 7 inches), and it is CE, UL, and CSA-certified.



Repair Services for 803-B4

Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 803-B4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Revisions for 803-B4

Please refer to the manual for more information about the 803-B4 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
803-B4 Ser A
803-B4/A, Series A, Rev A Request Quote
Common misspellings:
  • b03-B4
  • 8o3-B4
  • 803-84
  • 803-BA
  • 803B4

Dimensions For 803-B4

Size
Input Type
Panel Cutout Height in mm
Panel Cutout Width in mm
Terminal Height in mm
Terminal Width in mm
Terminal Overall Depth in mm
Terminal Mounted Depth in mm

Dimensions For 803-B4

Resolutions For 803-B4

About

Technical Specifications for 803-B4

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.803-B4
Product TypeRotating Cam Limit Switch
Style of DeviceB
Circuits4
ModificationN/A
Modification 2N/A
Modification 3N/A
Enclosure Type1
Amps10
ContactSnap Action 1 N.O.-1 N.C.
Cam Operators2-12 Independent
Max. Shaft Speed150 rpm
Cam Duration14°-346°
Extension StandardLeft Shaft
ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.803-B4
Product TypeRotating Cam Limit Switch
Style of DeviceB
Circuits4
ModificationN/A
Modification 2N/A
Modification 3N/A
Enclosure Type1
Amps10
ContactSnap Action 1 N.O.-1 N.C.
Cam Operators2-12 Independent
Max. Shaft Speed150 rpm
Cam Duration14°-346°
Extension StandardLeft Shaft

About 803-B4

The 803-B4 Rotating Cam Limit Switch is a circuit control switch by Allen-Bradley which are used for control of machinery with dedicated operational cycles, in industrial processes where machine motion is determined by the cam switch’s shaft rotation. It makes uses of its shaft-mounted cam which produces actuation as the shaft rotates, and it is suitable for heavy-duty operations with its long life and minimal maintenance needs. The device is a control switch in the Style “B” series, and it has 3 circuits with a snap-action contact block, and it comes with a contact-mounted spring-loaded cam-roller assembly. The 803-B4 has 3 independently-operated cam assemblies with variable heavy-duty higher and lower cam segments, and a 150 RPM rotating shaft, on which the cam is mounted. It has a keyway (shaft slot) which is used for connecting machines to the driven shaft, and like all Style “B” switches, it comes with a factory standard left shaft extension. The circuit is activated when the shaft rotates, driving the upper cam segment against the cam roller, thereby opening contact 1 and 2 of the 10A snap-action contact, and closing contacts 3 and 4, and the circuit is de-activated as the cam valley (lower cam segment) passes by the cam roller.



The 803-B4 has a timing measured in degree, which is the moment when the cam activates the circuit, and a cam dwell time, which is the amount of time for which the cam lobe activates the circuit, and it is determined by the size of the cam lobes. Both the dwell and timing can be internally adjusted when the machine is not in motion, and the timing can be set a total range of 14 to 346 degrees, and the settings of the dwell and timing determine machine’s operation. The device has a cast iron side plate, and it comes with a NEMA Type 1 rated enclosure. The 803-B4 has a working temperature range of -30 to 66 degrees Celsius (-22 to 150 degrees Fahrenheit), with a storage range of -30 to 93 degrees Celsius (-22 to 200 degrees Fahrenheit), and it is built for rugged, and heavy-duty operations like steel forming, packaging/assembling, and punch presses operations. The 803-B4 weighs approximately 10.9 kilograms (24 pounds), with total dimensions of 144.5 x 82.6 x 177.8 millimeters (5.69 x 3.25 x 7 inches), and it is CE, UL, and CSA-certified.



Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 803-B4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 803-B4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Revisions

Please refer to the manual for more information about the 803-B4 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
803-B4 Ser A
803-B4/A, Series A, Rev A Request Quote

Common misspellings:
  • b03-B4
  • 8o3-B4
  • 803-84
  • 803-BA
  • 803B4
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