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Overview
- Required for disconnect install on products in Bulletins A21S4, A28S4, and WS2D
- Designed for Square D 9422 disconnect switches with preferred cutouts
- Ensures interlocking between enclosure door and disconnect mechanism
- Includes panel drilling and installation instructions
- Compatible with Hoffman Bulletin A21S4, A28S4, and WS2D enclosures
Specifications
Application | Controls and Drives; Corrosive Environments |
Color | Gray |
Color Code | ANSI 61 |
Finish | Powder Coated |
Material | Mild Steel |
Material | Steel |
Modification Services | Yes |
Mounting Type | Panel Mounting |
Series | APC |
Size | for Sq. D 9422 in |
Thickness | 14 ga |
Thickness | 1.9 mm |
Type | Other Accessories |
Weight | 1.1 lb |
Works With | NEMA |
Package Dimensions (L x W x H) | 19.5 IN x 4.5 IN x 3.1 IN |
Package Dimensions (L x W x H) | 49.53 cm x 11.43 cm x 7.874 cm |
Package Weight (Imperial) | 1.100 L |
Package Weight (Metric) | 0.499 kg |
How to Install the I-T-E MAX-FLEX Mechanism
This guide provides step-by-step instructions for installing the I-T-E MAX-FLEX mechanism in Hoffman enclosures, ensuring proper assembly and adjustment for safe operation.
Estimated time: 1h
Tools needed:
Screwdriver, Drill, Wrench
Supplies needed:
Mounting screws, Lockwashers, Flat washers, Hex nuts, Shoulder collar, Slide arm, Door catch
- Assemble the operating handle
Attach the I-T-E operating handle and cable frame assembly to the enclosure flange opening. Omit the cap screw and lockwasher that fits into the bottom hole of the I-T-E operating handle.
- Install the slide arm
Place the slide arm over the interlock lever part of the I-T-E operating handle. Insert the smaller diameter end of the shoulder collar through the oval slot in the slide arm, then install the long cap screw with lockwasher through the shoulder collar into the bottom mounting hole of the I-T-E operating handle and tighten.
- Connect the slide arm to the lock release mechanism
Attach the bottom of the slide arm to the offset arm of the lock release mechanism using two flat washers, two lockwashers, and two hex nuts. Do not tighten until adjustments are made.
- Adjust the slide arm length
Ensure the safety lock in the I-T-E operating handle releases just before the master door is fully latched. Adjust the slide arm length accordingly.
- Install the door catch
Attach the door catch to the tapped spacer on the door using the bottom set of mounting holes with screws and lockwashers. Adjust the door catch to prevent the door from opening when the I-T-E operating handle is in the 'ON' position.
- Drill and tap holes in the panel
Drill and tap holes in the panel as specified in the installation diagram. Ensure the disconnect can be located within reach of the cable length being used.
- Install the panel
Mount the panel on the collar studs in the enclosure securely.
- Mount the disconnect switch
Install the disconnect switch or circuit breaker and operating mechanism on the panel following the I-T-E instructions and parts.
Frequently Asked Questions about nVent
What industries and applications are nVent products used for?
nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.
What environmental ratings do nVent products have?
nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.
What accessories are available for nVent products?
nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.
What certifications and standards do nVent products comply with?
nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.
What is nVent's warranty policy?
nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.
What technical support does nVent offer?
nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.