Eaton CB1633B120480KGRAX5 Bolted Contact Switch - UL Listed
Part Number: CB1633B120480KGRAX5
Quick Summary
Eaton CB1633B120480KGRAX5 bolted pressure contact switch provides reliable protection for three-pole industrial switchgear. When diagnosing nuisance trips or slow fault isolation, engineers need a trusted interlock and capacitor trip option that fits into tight control power architectures. This unit carries UL Listed certification with broad NEMA ratings (NEMA 1, 3R, 4, 12) and supports optional ground-fault and blown fuse detection to meet critical plant safety and reliability standards. With 480 V system capability and 120 V control, it integrates smoothly with Eaton switchgear and provides a robust, low-maintenance path to compliant protection.
Product Information
Extended Description
CB1633B120480KGRAX5 Eaton: Eaton pringle bolted pressure contact switch,Interlock, Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),1600A,1NO-1NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KGRAX5
UPC
782116958290
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
Ground fault with control power transformer
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, Single-phase voltage relay with capacitor trip device (SPVR), BFD with no 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 - CB1633B120480KGRAX5
Interlock and SPVR capacitor trip device are embedded in CB1633B120480KGRAX5, delivering a fast, controlled trip sequence that reduces nuisance trips in demanding switchgear environments. Business impact: fewer unplanned outages and shorter downtime, enabling higher plant throughput and reliability. Application: motor control centers and power distribution panels benefit from reliable startup sequencing and predictable protection. Ground fault protection with an auxiliary transformer-backed sensing option enhances personnel safety and device integrity. Business impact: early fault detection minimizes arc-flash exposure and collateral equipment damage. Application: 480 V three‑phase networks in process plants or data centers. Three-pole 1NO-1NC contact configuration provides precise control for line and load switching. Business impact: improved switching accuracy supports 3‑wire control schemes and safer starter sequences. Application: main feeders and critical loads. Bottom feed and bottom fuse configuration simplify installation by aligning with common switchgear enclosures and reducing wiring runs. Business impact: faster installation, reduced labor costs, and lower risk of wiring errors. Application: retrofit or new-build switchgear cabinets. UL Listed certification and broad NEMA ratings (1, 3R, 4, 12) ensure regulatory compliance and rugged performance in harsh environments. Application: industrial facilities operating under stringent safety standards. Optional Ground Fault Relay, Blown Fuse Detection, and auxiliary contact provisions offer scalable protection and future-proofing. Business impact: adaptable protection schemes and easy upgrades. Application: upgrading legacy panels without replacing entire assemblies.
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FAQs
Install CB1633B120480KGRAX5 using the bottom feed configuration in a suitable three-pole enclosure rated for 480 V. Connect control voltage to 120 V as specified, mount according to manufacturer guidelines, and verify the 1 NO-1 NC contact arrangement aligns with your control circuits. Use proper lockout/tagout procedures during installation.
Verify amperage rating at 1600A, system voltage 480 V, and control voltage 120 V. The device supports fusible protection and offers 1 NO-1 NC contact configuration in a three-pole arrangement. Ensure NEMA ratings (1, 3R, 4, 12) align with your environmental conditions and enclosure requirements.
Yes. The CB1633B120480KGRAX5 is designed for MCC-type applications, offering interlock, capacitor trip device, and ground fault protection to support safe, reliable motor startup and protection sequences in 480 V feed systems.
The device is UL Listed and carries broad NEMA ratings (1, 3R, 4, 12), ensuring compliance with common industrial safety standards and enabling use in a wide range of harsh environments typical of manufacturing and processing facilities.
With optional ground fault relay, blown fuse detection, and auxiliary contact provisions, the CB1633B120480KGRAX5 enables proactive condition monitoring and easier upgrades. The robust protection features help minimize downtime and extend panel life, delivering a favorable total cost of ownership in capital-intensive environments.