Overview
The P1 series pushbutton switches comply with MIL-PRF-8805/3, offering a durable solution for applications requiring momentary, sealed, snap-action, double-break contacts. Designed to withstand challenging military environments, the P1 provides exceptional mechanical longevity, achieving well over the standard 50,000 cycle requirement of MIL-PRF-8805. Enhanced contact life results from a swift switch transfer time, which minimizes arcing.
Construction and Performance
The P1’s durability in extreme conditions is bolstered by a silicone-sealed pushbutton using a patented ‘rolling sleeve’ mechanism, which also supports smooth operation across extensive temperature variations. Epoxy seals safeguard the contacts and terminals against harsh conditions and prevent solder flux penetration. Waterproofing follows both commercial (IP68S) and military (MIL-PRF-8805 Design 3) standards, with the commercial counterpart identified as the P3 series.
Key Features
- Robust mechanical design: Sealed button structure, protected contact areas, high contact pressure (120g/4.2 oz) delivering low resistance (≤25mΩ initial) for reliable current conduction with minimal contact bounce.
- Low level switching: With an optional gold plate configuration, interfacing directly with computers and solid-state devices is viable, handling both low-level signals and up to 10 ampere currents.
- User feedback: Positive tactile feedback is supplied alongside a variety of mounting options, and customized button and bezel engravings are available.
- Certifications: Recognized by UL, certified by CSA, and compliant with RoHS/IEEE/REACH regulations.
- Sealing options: Meeting MIL-PRF-8805 Design 2 and offering choices between IP68S or MIL-PRF-8805 Design 3 waterproofing standards.
Electrical Characteristics
Electrical ratings encompass a 10A resistive load capacity at sea level with options for inductive, lamp, and motor loads. Low level contact capability is specified at 10mA and 30mV max DC or peak AC. The operational lifespan is rated at 25,000 electrical cycles for circuit forms 3, 4, & 5, and an impressive 250,000 cycles for circuit forms 2 and 1.
Physical Properties
The P1 series boasts an operating temperature range extending from -55°C to +85°C, and varying operational and reset forces depending on the model. Materials include black anodized aluminum alloy for the case, with options for silver or gold-plated contacts.
Specifications
Note: These product specifications are subject to change without notice, and detailed information can be referenced at the manufacturer’s website: www.ottoexcellence.com.
Manual:
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