Eaton CB1633B120208GRAX5 Bolted Pressure Switch - UL
Part Number: CB1633B120208GRAX5
Quick Summary
The Eaton CB1633B120208GRAX5 bolted pressure contact switch provides reliable protection for electrical power distribution in industrial facilities. Engineers often struggle to coordinate protective schemes, fuse management, and fault clearance across three‑phase systems in demanding environments. UL Listed certification supports safety compliance, while compatibility with NEMA 1, 3R, 4, and 12 enclosures ensures resilience in wet, dusty, and corrosive settings. Optional Ground Fault Relay, Blown Fuse Detection, and single‑phase protection expand system reliability without adding complex wiring. In practice, this device reduces downtime and streamlines panel design by delivering bottom‑feed, three‑pole protection with a robust fault‑trip mechanism, helping maintenance teams meet uptime targets and regulatory requirements.
Product Information
Extended Description
CB1633B120208GRAX5 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips device),1600A,1NO-1NC,120V,Bottom feed,Ground fault,208V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120208GRAX5
UPC
782116958658
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
208 V
Voltage - max
208 V
Voltage rating
208 V
Special features
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no lights (trips device)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633B120208GRAX5
Feature 1600A Amperage Rating → Business Impact Enables single-device protection for large feeders, reducing panel complexity and total installation costs. Application Suitable for motor feeders and heavy-duty distribution panels in manufacturing facilities. Feature 208V System Voltage → Business Impact Aligns with common facility power distribution, simplifying panel wiring and compatibility. Application Ideal for switchgear and protected feeder circuits in industrial plants. Feature 120V Control Voltage and 1NO-1NC → Business Impact Streamlines control circuitry and enhances trip reliability, lowering wiring errors. Application Fits control circuits driving protective relays and auxiliary contacts in MCCs. Feature Bottom Feed and Three-Pole Configuration → Business Impact Facilitates compact, modular installation with straightforward wiring routes, reducing panel depth and assembly time. Application Suited for three-wire, three-pole protection across power distribution blocks. Feature Ground Fault/Single-Phase Options (Optional) → Business Impact Expands protective coverage without rewiring, enabling targeted fault detection and industry-standard safety practices. Application Enables Ground Fault Relay and single-phase protection in complex networks for improved safety and uptime. Feature Fusible Protection with SPVR Trip Device → Business Impact Delivers reliable overcurrent and capacitor-trip coordination, minimizing nuisance trips. Application Ideal for motor control centers and high-load feeders requiring precise fault clearance. Feature UL Listed and NEMA Compatibility → Business Impact Supports regulatory compliance and rugged operation in harsh environments, reducing risk during audits. Application Suitable for installation in enclosures rated NEMA 1, 3R, 4, and 12 in demanding facilities.
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FAQs
CB1633B120208GRAX5 is designed for bottom-feed installation with a three-pole, 1NO-1NC contact arrangement. Ensure the bottom-feed fuse configuration aligns with your enclosure and wiring methods, and plan for ground fault transformer integration if you intend to enable optional Ground Fault Relay. Take note of the device weight (about 200 lb) and the 16 in x 24 in footprint to allocate proper mounting clearance and service access.
This unit is rated for 1600A with a system voltage of 208V and a control voltage of 120V. It operates as a three-pole device with 1NO-1NC contacts. It is fusible and supports SPVR (single-phase voltage relay) protection. Verifying these values ensures compatibility with your feeders, motor loads, and control circuits, while confirming enclosure ratings meet your environment.
Yes. The three-pole, fusible configuration with bottom feed is well suited for motor control centers and switchgear panels. Its SPVR trip device and optional ground fault enhancements provide coordinated protection for large feeders. With NEMA 1, 3R, 4, and 12 compatibility, it supports installation in varied environments, from clean rooms to dusty or damp facilities.
The CB1633B120208GRAX5 carries UL Listed certification, confirming safety compliance for electrical protection devices. Its NEMA compatibility (1, 3R, 4, 12) further demonstrates ruggedness in harsh environments. Optional protections like Ground Fault Relay and Blown Fuse Detection extend regulatory alignment and safety coverage without adding wiring complexity.
Plan for periodic inspection of the protection circuitry and any installed optional features (Ground Fault Relay, Blown Fuse Detection). The product’s robust 1600A rating and 208V system compatibility support long service intervals for high-load feeders, reducing downtime. The one-year warranty (or 18 months from shipment) provides initial risk mitigation, while enclosure compatibility minimizes spare parts variety for maintenance teams.