Authorized nVent Distributor
nVent AMHUM - Mechanical Hygrostat, 2.64x1.97x1.50, Lt Gray, Plastic

nVent AMHUM Mechanical Hygrostat, 2.64x1.97x1.50, Lt Gray, Plastic

UPC: 783510164485


Documents & Media
Installation Instructions

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The nVent AMHUM Mechanical Hygrostat (SKU: AMHUM) is a UL94V-0 rated, light-gray plastic controller designed to prevent condensation and corrosion in industrial enclosures by managing relative humidity (RH) levels. It maintains RH below 65% to protect sensitive electronics, including PLCs, VFDs, and control panels, from moisture damage. The AMHUM features an adjustable RH range, a change-over contact, and a high switching capacity of 5A @ 250V AC (resistive load) or 0.2A @ 250V AC (inductive load). With a service life exceeding 100,000 cycles and a maximum permissible air velocity of 50 ft./sec. (15 m/s), it delivers reliable performance in demanding environments. Its 3-pole terminal supports wires up to AWG 14 (2.5 mm²), and the contact resistance is less than 10 mΩ.
  • Adjustable relative humidity range
  • High switching capacity
  • Long service life (>100,000 cycles)
  • Maximum permissible air velocity of 50 feet/sec. (15 m/s)
  • Maximum switching voltage = 250 VAC 250 V should be switched only in a non-condensing environment
  • Change-over contact
  • Connection is a 3-pole terminal for AWG 14 max. (2.5-mm squared)
  • Contact resistance less than 10 mΩ

Specifications

Application
Controls and Drives;Power Distribution
Color
Light Gray
Color
Gray
Color
Grey
Color Code
RAL 7035
Connection Type
Terminal (AWG 14)
Depth
1.5 IN
Depth
38 mm
Finish
Smooth Matte
Height
2.64 in
Height
67 mm
Input Voltage AC
200-250 V
Material
Plastic
Poles
3
Size
2.64x1.97x1.50
Size
2.64 x 1.97 x 1.5 in
Size
2.64x1.97x1.50 inches
Type
Cooling Accessories
Voltage AC
200 - 250 VAC
Voltage Rating
200 - 250 VAC
Voltage Rating
250 VAC
Weight
0.1 lb
Width
50 mm
Width
1.97 IN
Package Dimensions (L x W x H)
2 IN x 2 IN x 2.75 IN
Package Dimensions (L x W x H)
5.08 cm x 5.08 cm x 6.985 cm
Package Weight (Imperial)
0.100 L
Package Weight (Metric)
0.045 kg
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How to Install the Mechanical Hygrostat

This guide provides step-by-step instructions for installing and configuring the Mechanical Hygrostat in a stationary electrical cabinet.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Mount the hygrostat

    Snap-mount the hygrostat onto a 35mm DIN rail, ensuring it is installed vertically with the connection terminals facing down.

  2. Connect the wiring

    Use a 3-pole terminal to connect the power supply wires. Ensure the solid wire does not exceed AWG 14 (2.5 mm²) and the stranded wire with ferrule does not exceed AWG 16 (1.5 mm²). Tighten the connections to a maximum torque of 0.5 Nm.

  3. Verify the installation

    Check that the hygrostat is securely mounted and that all electrical connections are tight and properly insulated. Use a multimeter to verify the correct voltage at the terminals before powering on the device.

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.