OMPBD7-mush2

Supported Applications

The Omega OMPBD7 series comprises 22 mm pilot devices, including emergency stop push buttons and selector switches, engineered for heavy-duty and oil-tight applications. These modular units are designed for demanding industrial environments where rugged performance is required. The series supports configurations with momentary or maintained operations across extended, flush, mushroom (30 mm, 40 mm, 60 mm), push-pull, twist-to-release E-stop, and keyed button styles.

Operating Conditions & Performance

The OMPBD7 series operates within an ambient temperature range of -25 to 70°C (-13 to 158°F) for plastic operators. Short-term storage is rated from -40 to 85°C (-40 to 185°F). Humidity tolerance covers 50 to 95% RH from 25 to 60°C (77 to 140°F), validated per Procedure IV of MIL-STD-810C, Method 507.1 cycling test.

Enclosure ratings differ by operator material: plastic operators achieve NEMA 4/4X/13 and IP65/66 (UL Type 3/3R/4/4X/12/13), while metal operators are rated for NEMA 4/13 and IP65/66 (UL Type 3/3R/4/12/13). Mechanical durability is specified at 10,000,000 cycles per EN 60947-5-1. The series withstands vibration testing from 10 to 2000 Hz with a maximum displacement of 1.52 mm (peak-to-peak) and up to 10 G for durations ranging from 3 hours to 6 hours, depending on the component assembly.

Electrical performance includes a thermal current rating of 10 A max enclosed at 40°C ambient per UL 508 and EN 60947-5-1. Insulation voltage (Ui) is rated at 690 V for screw terminals and 300 V for screwless terminals, with a minimum dielectric strength of 2500 V for one minute.

Configuration Options

The series offers extensive configurability across operator materials, contact types, illumination options, and accessories to meet specific control panel requirements.

• Housing Materials: Plastic operators utilize high-grade thermoplastics; metal operators feature a die-cast zinc housing with corrosion-resistant chrome plating.
• Contact Blocks: Available in standard (NO, NC) and specialized configurations including NOEM (early make), NCLB (late break positive opening), GCB (Guardian Contact Block for E-stops), and low voltage variants. Up to six contact blocks can be mounted per operator.
• Illumination: Integral LED assemblies are offered with nominal voltages of 24 Vac, 10–30 Vdc, 120 Vac, or 240 Vac. LEDs provide up to 11 years of life and feature H-bridge circuitry.
• Electrical Connections: Options include IP20 recessed screw terminals (accepting #18 to 12 AWG) or spring-clamp terminals (#18 to 14 AWG).
• Approvals & Certifications: Components carry UL, cUL, CSA, CE, and RoHS approvals. The series is listed under UL 46E, NEMA A600, Q600, with front elements being UL Recognized and assemblies UL Approved.
• Accessories: Available options include a 22.5 mm (0.89") hole plug (OMPBD7-N2), mounting ring wrenches for plastic or metal operators (OMPBD7-AW2), additional key sets, inscription caps with legends such as "START," "STOP," and "ON/OFF," and various contact block types.

Key Product Differences

The OMPBD7 line distinguishes between plastic (OMPBD7P) and metal (OMPBD7M) operator styles, which dictate specific enclosure ratings. Plastic operators support NEMA 4X/13 protection, whereas metal operators are rated for NEMA 4/13 but do not carry the Type 4X rating in this series context.

Button operation varies by model: momentary mushroom and extended styles contrast with maintained push-pull or twist-to-release E-stop configurations. Contact block functionality is further segmented into standard blocks (A600, Q600) for general use and low voltage contact blocks recommended for applications below 17 V, 5 mA.

Model numbering follows the format OMPBD7----. For example, non-illuminated twist-to-release E-stop push buttons are designated with MT codes (e.g., OMPBD7M-MT44PX01), while illuminated variants utilize LMP or LMT prefixes. Guardian Contact Blocks (GCB) for emergency stop applications are identified by the "S" suffix in contact block designations.