Eaton CB1633B120480KA95 Pringle bolted pressure contact switch - UL Listed
Part Number: CB1633B120480KA95
Quick Summary
Eaton CB1633B120480KA95 Pringle bolted pressure contact switch provides reliable interlock control for heavy-duty electrical panels. Engineers often struggle with nuisance trips and complex wiring in safety interlocks, delaying projects and increasing maintenance costs; this unit is designed to help. UL Listed certification and NEMA ratings for 1, 3R, 4, and 12 ensure enclosure compatibility across indoor, outdoor, and wash-down environments. With 1600A and 480V capability, plus a bottom-feed configuration, it simplifies installation and wiring in industrial control panels, switchgear, and motor control centers, delivering safer operation and quicker commissioning for industrial automation applications.
Product Information
Extended Description
CB1633B120480KA95 Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with three on lights (trips switch),1600A,1NO-1NC,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KA95
UPC
782116958382
Product Length/Depth
16 in
Product Height
32 in
Product Width
24 in
Product Weight
200 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
OPTIONAL Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions, AVAILABLE.
Contact configuration
1 NO-1 NC
Feed type
Bottom
Fuse configuration
Bottom feed
Ground
No ground fault
Number Of Poles
Three-pole
Number of wires
3
Switch type
Electrical trip with charge-before-close mechanism
Type
Pringle bolted pressure contact switch
Amperage Rating
1600A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Interlock, BFD with three normally on lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB1633B120480KA95
Feature: Three-pole 1 NO-1 NC contact configuration. Business Impact: Simplifies wiring, reduces panel footprint, and enhances reliability in control circuits. Application: Used in switchgear and motor control centers to deliver clear, predictable switching behavior. Feature: Bottom feed and fusible configuration. Business Impact: Eases field wiring and protection coordination, speeding assembly and serviceability. Application: Ideal for compact panel layouts where easy access to feeders is required. Feature: Interlock, BFD with three normally on lights. Business Impact: Strengthens safety sequencing and status indication, lowering arc flash risk and misoperation. Application: Critical for automated safety interlocks in manufacturing lines. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Auxiliary and Kirk Provisions. Business Impact: Improves fault detection, diagnostics, and preventive maintenance, reducing downtime. Application: Fits panels with enhanced protection needs and complex control logic. Feature: UL Listed, NEMA 1, 3R, 4, 12 compatibility. Business Impact: Ensures regulatory compliance and broad enclosure applicability, simplifying procurement. Application: Suitable for harsh industrial environments and diverse installation sites.
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FAQs
This unit uses a bottom feed, three-pole design with a 1 NO-1 NC contact configuration. Plan mounting with the 16 in depth, 32 in height, and 24 in width footprint, and ensure the enclosure supports the listed NEMA ratings. Confirm control voltage of 120 V and system voltage 480 V, and select fuse protection accordingly. Optional ground fault relay is available.
The electrical trip with charge-before-close ensures the switch reliably opens and charges before closing, preventing simultaneous contact states. This reduces arc flash risk and enhances personnel protection during maintenance and interlock operations, making it a dependable choice for automated safety sequences in demanding industrial environments.
Yes. The device is rated for 480V system voltage and 1600A current, with a three-pole configuration to balance load. Ensure wiring, cabling, and fusing are sized to these ratings, and verify compatibility with the enclosure class (NEMA 1, 3R, 4, 12) for the intended environment.
The CB1633B120480KA95 carries UL Listed certification and supports NEMA 1, NEMA 3R, NEMA 4, and NEMA 12 enclosures. This enables use in indoor cabinets and outdoor or wash-down environments, helping you meet regulatory requirements while choosing appropriate protection for your panel.
Optional features include Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contact Provisions. These options improve fault detection, diagnostics, and integration with control circuits, reducing unplanned downtime and simplifying preventive maintenance in complex automation systems.