Division 2

Division 2 motor brakes are used in locations that are defined as normally not hazardous (see below). Division 2 can be used in Division 2 environments only.

Use Cases | Applicable Industries


Product Image

SAB 56,800 Series

  • NEMA Frame: 56C - 145TC
  • Torque (lb-ft): 1.5 - 25
  • Nm: 2 - 34
  • Enclosure: IP 56
  • Class 1 Group A, B, C, & D
  • Class 2 Group F & G

View SAB 56,800 Series
Product Image

SAB 87,800 Series

  • NEMA Frame: 182TC - 256TC/UC
  • Torque (lb-ft): 6 - 105
  • Nm: 8 - 142
  • Enclosure: IP 56
  • Class 1 Group A, B, C, & D
  • Class 2 Group F & G

View SAB 87,800 Series

Class 1, Division 2 NEMA Brakes & Class 2, Division 2 NEMA Brakes

Use Cases for Division 2 Disc Brakes

Industrial fires and explosions occurring in chemical plants, mills, flour silos, and other facilities that store, or have high levels of, flammable solid dust particles and liquids result from faulty equipment failing to mitigate high external surface temperatures. Stearns’ line of hazard-proof Division 2 motor brakes proactively eliminate the risk of employee safety and increased factory overhead costs. 

What does Division 2 mean?

The National Electrical Code (NEC) defines Division 2 locations as the category of environment with conditions where ignitable concentrations of hazards are in closed containers or closed systems that are prone to accidental rupture, disintegration or malfunction.

Division 2 Class Types 

Division 2 NEMA-certified brakes can be further broken down into classes, which define the type of explosive or ignitable substance which are present in the atmosphere.

Class 1 locations are locations that may contain flammable gases or vapors and explosive or ignitable concentrations. 
NEMA Class 1, Division 2 disc brakes are designed to mitigate explosions fueled by hydrogen or acetylene. 

Division 2 Group Types

Class 1 gases and vapors are further categorized into groups. Groups are defined as the explosive characteristics of the air mixtures of gases, vapors or dusts. Materials are placed in groups based on their ignition temperatures, maximum explosive pressure, and other specific properties. 

Class 2 locations are locations with high volumes of combustible dust, but ultimately qualify as less hazardous than Class 1. A NEMA Class 2, Division 1 disc brakes are designed with enclosures that restrict the entry of ignitable dusts or exit of sparks or hot gases which may cause the ignition of dust suspended in the air through limited exterior surface temperature. Class 2 dust is categorized into three groups. There are three different class 2 groups that are all composed of different airborne dusts. Dust properties considered include thermal and electrical conductivity.

Locate a Stearns Division 2 Brake by Industry:

Agriculture | Cement & Aggregate | Crane & Hoist | Food & Beverage | Forestry | Gas & Oil | Marine | Material Handling | Mining | Packaging | Water Processing

Products Similar to Division 2 NEMA Brakes

For Hazards that Show Up More Frequently Under Normal Operating Conditions

Stearns’ Division 1 NEMA motor brakes are designed to support safe industrial motor control in environments with a wide variety of flammable gases, liquids, and solid particles making them well-suited for the following industries: automotive, construction, packaged goods, and transportation. 

For the Mining Sector

Stearns’ industrial mining brake systems are built to exert large magnitudes of clamping force needed for starting and stopping rotating drive equipment such as conveyor belt systems, mine hoists, and more. All industrial mining motor brakes are Mine Safety and Health Administration (MSHA)-Certified and are in compliance with the National Electrical Manufacturers Association’s (NEMA) standards.