Eaton CB1633B120480GRAX7 Bolted Pressure Switch - UL Listed
Part Number: CB1633B120480GRAX7
Quick Summary
Eaton CB1633B120480GRAX7 bolted pressure switch enables safe three-pole control in 480V industrial power panels for critical processes in manufacturing and utility environments. Engineers often struggle with precise trip coordination and reliable fault protection in complex switchgear, which can lead to unexpected downtime. UL Listed certification ensures safety compliance, and the unit supports rugged NEMA configurations (NEMA 1, 3R, 4, 12) for varied environments. This model integrates SPVR with a capacitor trip device and offers bottom-feed installation, 1600 A capacity, and 480 V system readiness. Together these features translate to reduced maintenance costs, faster fault isolation, and improved uptime in power distribution applications.
Product Information
Extended Description
CB1633B120480GRAX7 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),1600A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480GRAX7
UPC
782116958481
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
2 NO-2 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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no 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 - CB1633B120480GRAX7
Feature → Business Impact → Application: The CB1633B120480GRAX7 delivers an amperage rating of 1600A for heavy-load circuits, enabling safe handling of high-power loads in 480V three-pole systems, which reduces the risk of nuisance trips and unplanned outages in critical processes. This translates to measurable uptime gains and improved panel reliability in manufacturing lines and utility switchrooms. Feature → Business Impact → Application: Control voltage at 120V simplifies integration with existing control systems and MCCs, enabling quicker commissioning and easier maintenance, reducing wiring errors and enabling predictable operation in machinery automation. Feature → Business Impact → Application: The 2NO-2NC contact configuration provides flexible signaling and interlocking options for motor control and protection schemes, improving selective coordination and fault clearances in complex panels. Feature → Business Impact → Application: Ground fault with control power transformer and optional Ground Fault Relay capability enhances personnel safety and metering accuracy, supporting compliance with electrical safety programs in hazardous or damp environments. Feature → Business Impact → Application: Bottom feed and fusible protection simplify installation, reduce cabinet footprint, and streamline maintenance in compact enclosures, while retaining robust protection in harsh environments per NEMA ratings. Feature → Business Impact → Application: SPVR with capacitor trip device (BFD) enables precise trip timing and coordination in single-phase protection scenarios, reducing arc-flash exposure and improving safety margins in distribution panels. Feature → Business Impact → Application: UL Listing and durable construction improve procurement confidence, shorten vendor qualification cycles, and support warranty claims, delivering lower total cost of ownership for capital projects. With optional Kirk provisions and auxiliary contact provisions, integration with existing control architectures is straightforward, minimizing redesign costs and downtime.
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FAQs
CB1633B120480GRAX7 supports bottom feed configuration with fusible protection suitable for three-pole, 480V panels. Its compact footprint and 16x24x32 inch dimensions align with standard switchgear cabinets, simplifying mounting and wiring. Compatible with optional ground fault relays and auxiliary contacts for enhanced signaling and interlock schemes.
Key specs include 1600A amperage rating, 480V system voltage, and 120V control voltage. It features a 2NO-2NC contact configuration and fusible protection, plus a single-phase capacitor trip device (SPVR) for coordinated protection. It is designed for rugged enclosures per NEMA ratings 1, 3R, 4, and 12.
Yes. The switch includes ground fault protection with a dedicated transformer in the control circuit and supports optional Ground Fault Relay configurations. This combination improves fault detection, safety, and trip accuracy in panels handling sensitive or high-energy loads.
The CB1633B120480GRAX7 is UL Listed, offering recognized safety certification for electrical equipment. It supports rugged NEMA configurations (1, 3R, 4, 12) for versatile enclosure compatibility, making it suitable for a range of industrial environments.
The unit’s robust 1600A rating, SPVR capability, and bottom-feed design reduce unplanned downtime and simplify maintenance schedules. With Eaton’s one-year warranty (or 18 months from shipment), and optional ground fault features, you can expect lower lifecycle costs, faster fault isolation, and improved system reliability in power distribution applications.