Division 1

Division 1 motor brakes are used in locations that are defined as normally hazardous (see below). Division 1 brakes can be used in both Division 1 and Division 2 types of locations.

Use Cases | Applicable Industries


65300 Product Image

SAB 65,300 Series

  • NEMA Frame: 56C - 145TC
  • Torque (lb-ft): 1.5 - 15
  • Nm: 2 - 20
  • Enclosure: IP 23, 56 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G

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Product Image

SAB 82,300 Series

  • NEMA Frame: 324 - 405 TC/TSC/UC/USC
  • Torque (lb-ft): 125 - 330
  • Nm: 169 - 447
  • Enclosure: IP 56 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G

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Product Image Stearns Brakes 82,300

SAB 82,300 Series Foot Mounted

  • Foot Mounted
  • NEMA Frame: 324 - 405 TC/TSC/UC/USC
  • Torque (lb-ft): 125 - 330
  • Nm: 169 - 447
  • Enclosure: IP 56 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G

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Product Image

Encoder SAB 82,300 Series

  • NEMA Frame: 324 - 405 TC/TSC/UC/USC
  • Torque (lb-ft): 125 - 330
  • Nm: 169 - 447
  • Enclosure: IP 56 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G

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Product Image

Encoder SAB 87,300 Series

  • NEMA Frame: 182TC - 256TC/UC
  • Torque (lb-ft): 10 - 105
  • Nm: 14 - 142
  • Enclosure: IP 23, 55 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G or F & G

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Product Image

SAB 87,300 Series Foot Mounted

  • Foot Mounted
  • NEMA Frame: 182TC - 256TC/UC
  • Torque (lb-ft): 10 - 105
  • Nm: 14 - 142
  • Enclosure: IP 23, 55 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G or F & G

View SAB 87,300 Series Foot Mounted
Product Image

SAB 87,300 Series

  • NEMA Frame: 182TC - 256TC/UC
  • Torque (lb-ft): 10 - 105
  • Nm: 14 - 142
  • Enclosure: IP 23, 55 / NEMA 7, 9
  • Class 1 Group C & D
  • Class 2 Group E, F, & G or F & G

View SAB 87,300 Series

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

Use Cases for Division 1 Disc Brakes

In industrial environments that are frequently subjected to dangers presented by a variety of different types of explosive conditions—namely in the form of vapors, gases, dusts and combustible fibers and flyings, measures must be taken to account for both production cost and employee safety. 

What does Division 1 mean?

The National Electrical Code (NEC) defines Division 1 as the category for environments where concentrations of hazards exist under normal operating conditions or where the hazard is a result of frequent maintenance or repair work. Installation requirements are typically more stringent for Division 1 locations in comparison to Division 2 due to the inherent combustion volatility that stems from industrial, commercial or scientific settings.

Division 1 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.

Division 1 Class Types 

Class 1 locations are locations that may contain flammable gases or vapors and explosive or ignitable concentrations. NEMA Class 1, Division 1 disc brakes are designed to not allow flame or spark to rupture the enclosure. 

Division 1 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 dusts are categorized into three groups: 

Locate a Stearns Division 1 Brake by Industry:

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

Products Similar to Division 1 NEMA Brakes

For Hazards that Show Up Less Frequently Under Normal Operating Conditions

Stearns’ Division 2 motor brakes help eliminate ignitable concentrations of hazardous liquids and granular solid particles produced under abnormal industrial operation conditions and are manufactured in accordance with electroindustry standards set by the National Electrical Manufacturers Association’s (NEMA).

For the Mining Sector

Stearns’  provides a line of industrial mining brakes that are Mine Safety and Health Administration (MSHA)-Certified and designed in compliance with NEMA standards making them the safest option for rotating drive equipment that requires a commercial brake system with simple on-and-off braking components, or alternatively, a complex braking system fit for dynamic environments requiring different braking responses to fluctuating environmental conditions.