6Pcs PBS-33b 12mm Waterproof Momentary Push Button Switch 2-Pin

6-Pack PBS-33b Waterproof Momentary Push Button Switches — Compact, Reliable & Non-Locking

Get a full pack of six PBS-33b 2-pin mini push button switches — the go-to choice for hobbyists, engineers, and DIY enthusiasts who need a compact, waterproof, momentary (non-locking / self-resetting) switch for electronics projects, control panels, and industrial equipment. At just 12mm, these switches fit neatly into tight spaces while delivering solid performance and durability.

Key Features

• Model: PBS-33b | 2-Pin, Non-Locking (Momentary / Self-Reset)
• Protection Rating: IP55 — dust-resistant and water-jet resistant
• Rated Voltage & Current: DC 12V / 4A; AC 250V / 3A, 125VAC / 6A
• Switch Rating: AC-15: 36V/10A, 110V/10A, 220V/5A, 380V/2.7A, 660V/1.8A; DC: 6V/4A, 12V/4A, 24V/4A, 48V/4A, 110V/2A, 220V/1A, 440V/0.6A
• Dielectric Strength: >1500VAC / 1 min
• Insulation Resistance: >10 MΩ
• Mechanical Life: Up to 1,000,000 operations (general button)
• Material: Durable plastic housing
• Operating Temperature: -25°C to +40°C
• Altitude Rating: Up to 2,000m
• Relative Humidity: Up to 90% (non-condensing)
• Pollution Level: Class 3
• Certifications: CCC, EMC
• Warranty: 1 Year

What's in the Box?

• 6 × PBS-33b 2-Pin Mini Momentary Push Button Switches (12mm)

Common Applications

• DIY electronics and Arduino/Raspberry Pi projects
• Control panels and industrial machinery
• Automotive dashboards and custom builds
• Home automation systems
• Doorbells, alarms, and lighting circuits

Made in Mainland China.

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Learn more: OSHA on personal protective equipment

Frequently Asked Questions

Q: What does "momentary" or "non-locking" mean for the PBS-33b push button switch?

A: A momentary (non-locking or self-resetting) push button switch only completes the circuit while it is being physically pressed. Once you release the button, it automatically returns to its original open (off) position. This makes the PBS-33b push button switch ideal for applications like doorbells, signaling circuits, and reset buttons where you only want the circuit active for a brief moment.

Q: Is the PBS-33b push button switch suitable for outdoor or wet environments?

A: Yes! The PBS-33b carries an IP55 protection rating, meaning it is resistant to dust ingress and low-pressure water jets from any direction. This makes it well-suited for outdoor control panels, automotive applications, or any environment where occasional moisture exposure is expected.

Q: What voltage and current can these 12mm mini push button switches handle?

A: These switches support a wide range of voltages. For DC applications: up to 440V/0.6A, with a sweet spot at 12V/4A. For AC applications: rated at 3A/250V or 6A/125VAC. Always verify your circuit requirements match the switch's ratings before installation.

Q: How many times can I use these PBS-33b switches before they wear out?

A: The PBS-33b has a mechanical life of up to 1,000,000 (100 × 10⁴) operations for the standard push button function, making it extremely durable for long-term everyday use in hobby and professional projects alike.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.