Eaton CB1633B120480GRAR Bolted Pressure Switch - UL Listed
Part Number: CB1633B120480GRAR
Quick Summary
Eaton pringle bolted pressure contact switch protects motors in industrial power distribution systems. A common pain point is nuisance trips and unreliable protection in aging switchgear, which this device helps mitigate with a capacitor trip feature and ground fault options. UL Listed certification coupled with compatible NEMA ratings (NEMA 1, 3R, 4, 12) ensures safety and regulatory compliance in demanding environments. The unit is designed for high-current, low-voltage protection applications and easy integration with standard control circuits. By combining robust protection with simple installation, it delivers improved reliability and reduced maintenance costs for plant-wide motor protection schemes.
Product Information
Extended Description
CB1633B120480GRAR Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three off lights (trips switch),1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480GRAR
UPC
782116958450
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.
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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally off lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633B120480GRAR
Three-pole bottom-fed design handles high-current loads in a 480V distribution with a 1600A amperage rating. This topology minimizes impedance and ensures reliable isolation during faults, reducing arc flash risk and downtime in motor-driven processes. Ideal for switchgear assemblies in manufacturing lines where space is constrained, the bottom-feed configuration simplifies cabinet wiring and improves installation time. The SPVR with capacitor trip device provides controlled, fast protection against phase-to-ground and capacitor-bank faults, translating into fewer nuisance trips, longer capacitor life, and steadier motor starts in critical conveyors and pumps. Ground fault protection with a control power transformer improves fault detection accuracy and maintains control power during faults, reducing unexpected shutdowns in extrusion lines and presses. The UL Listed rating with broad NEMA compatibility (1, 3R, 4, 12) simplifies compliance and commissioning across industries, while optional ground fault relay and auxiliary provisions enable tailored protection schemes. Its robust construction supports longevity in harsh environments, with 120V control voltage easing integration with existing control circuits and simple, scalable protection for large-current feeds.
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FAQs
CB1633B120480GRAR uses a bottom feed configuration with three poles and three wires, designed for easy mounting in standard low-voltage switchgear. It supports 480 V systems, 120 V control voltage, and is compatible with optional auxiliary contacts and ground fault provisions to tailor protection schemes to specific installations.
Key specs include a 1600 A amperage rating, 480 V system voltage, 120 V control voltage, three-pole configuration, fusible protection, and UL Listed certification. It is a single-phase voltage relay with capacitor trip (SPVR) designed to protect motors and critical loads while minimizing nuisance trips.
Yes. Its three-pole, fusible protection and SPVR capacitor trip provide coordinated motor protection for large drives and pumps. The 480 V rating and compatibility with low-voltage control circuits make it ideal for plant-wide motor protection schemes and reliable start-up sequences in harsh industrial environments.
UL Listed certification ensures safety and electrical compliance across North American installations. The device also carries broad NEMA ratings (1, 3R, 4, 12), which indicate suitability for various enclosure environments, protecting against dust, water, and corrosion—crucial for industrial reliability.
The unit’s robust construction and protective features reduce unplanned outages and maintenance cycles in high-current systems. Optional ground fault relay and auxiliary provisions enable customized protection that can lower downtime costs, extend capacitor life, and improve overall equipment effectiveness (OEE) in manufacturing facilities.