Selecting the appropriate SPDT-1NO-1NC motion-actuated switch is crucial for optimizing automation, enhancing safety, and improving energy efficiency in your electrical systems. These versatile devices offer precise control and reliability, making the right choice essential for seamless integration and long-term performance across diverse residential and commercial settings. A well-chosen switch ensures your installations function as intended, providing both convenience and peace of mind.
- Rating: 15A, 1/2HP, 125 250VAC; 0.6A, 125VDC; 0.3A, 250VDC
- Actuator Type: Long Hinge Lever; Switch Type:Momentary; Contact Type: SPDT 1NO 1NC
- Compact size, high sensitivity and short operating stroke, small pressing force, quick connect or disconnect. Durable and reliable material construction, long service life.
- For signal and limit control only. Do NOT directly switch high-power heating loads. Suitable for automotive electronics, test instruments, automation and small appliance internal limit signals (audio, toys, microwave/rice cooker).
- Rating: Ui: 380V Ith:15A. And the contact type is SPDT NO+NC
- Applicable to AC DC control circuits.Reliable for years
- High precision design, use easily.Designed to control the movement of a mechanical part.
- IP 40 Protection Degree. Which means this switch is available to tools & small wires (>1mm)
- Model Number : TZ-3111
- Features : Momentary
- Item Type : SWITCHES
- Origin : Mainland China
- Double Rotary Roller Lever
- Voltage and Current
- AC 380V/ DC 220V 5A
- Overall Size
- Current & Voltage : 5A 250V AC
- Poles：SPDT ；Contact Type：1NO + 1NC
- Action Type : Momentary; Actuator Type : Roller Lever Arm;Terminal Type : 3-Pin Terminals
- Advantage：Small contact distance, short stroke, low power, quick break
- Material : Alloy
- Certification : CCC
- Switch Type : Impact Switch
- Model Number : LX19-222
- Model Number : G5T16-E1Z200A03
- Features : Momentary
- Item Type : SWITCHES
- Origin : Mainland China
- 【Precision Mechanical Sensing】 Features a high-durability short hinge roller lever with momentary action, specifically engineered for sensitive position detection and accurate limit control in automated systems
- 【Industrial Standard Reliability】Fully CE certified and built to rigorous quality standards; ensures high repeatability and stable signal feedback in safety circuits and machine control loops
- 【Heavy-Duty Electrical Rating】Supports industrial-grade loads with a maximum thermal current Ithof 10A and insulation voltage Ui of 380V; compatible with AC and DC control circuits (250VAC / 250VDC)
- 【Rugged IP65 Construction】Encased in a high-strength zinc alloy and reinforced polymer housing, rated IP65 for superior protection against dust, industrial oils, and water splashes in harsh environments
- Rating: Ui: 380V Ith:15A. And the contact type is SPDT NO+NC
- Applicable to AC DC control circuits.Reliable for years
- High precision design, use easily.Designed to control the movement of a mechanical part.
- IP 40 Protection Degree. Which means this switch is available to tools & small wires (>1mm)
- Micro Limit Switch： for Audio Automobiles Microwave and other equipment
- Size：72.5*28*15.5mm
- Witch Rating：15A 250V AC
- Switch Types：Momentary；SPDT 1NO 1NC
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Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best SPDT-1NO-1NC Motion Actuated Switches
Understanding SPDT-1NO-1NC Functionality
SPDT-1NO-1NC refers to a Single Pole, Double Throw switch with one Normally Open (NO) and one Normally Closed (NC) contact. This configuration means the switch has a common terminal that connects to either the NO or NC terminal. When motion is detected, the common terminal switches its connection, typically from NC to NO, or vice-versa depending on the specific design. This dual-contact setup provides exceptional versatility, allowing the device to either activate a circuit (NO) or deactivate a circuit (NC) upon sensing movement, or even control two separate circuits simultaneously with opposing actions. Understanding this core functionality is vital for integrating these switches into complex control systems.
Key Features to Consider
- Detection Technology: Motion-actuated switches primarily use Passive Infrared (PIR) or Microwave (MW) technology. PIR detectors sense heat changes, ideal for human presence, while MW detectors emit radio waves and detect reflections, useful for detecting movement through non-metallic objects.
- Detection Range and Angle: Evaluate the area the switch needs to cover. Different models offer varying detection ranges (e.g., 20ft to 70ft) and angles (e.g., 180° to 360°). Ensure the coverage matches your application's requirements to avoid blind spots or false triggers.
- Power Rating and Load Capacity: Check the voltage and amperage ratings to ensure compatibility with your intended load (e.g., lighting, fans). Exceeding the switch's maximum load can lead to failure or safety hazards.
- Environmental Rating: For outdoor or damp environments, look for IP (Ingress Protection) ratings. Higher IP ratings (e.g., IP44, IP65) indicate better resistance to dust and water, ensuring durability and safe operation in challenging conditions.
- Adjustability: Many switches offer adjustable settings for sensitivity, time delay (how long the load stays on after motion stops), and ambient light detection (photocell override) to prevent activation during daylight hours. These features allow for fine-tuning performance.
Application & Installation Considerations
These switches are widely used in various applications, from automating lighting in hallways, closets, and garages to security systems and energy management. For optimal performance, consider the switch's placement carefully. Mount it where it has an unobstructed view of the detection area, avoiding direct sunlight or proximity to heat sources that could cause false triggers. Ensure the mounting height is appropriate for the specified detection range. Wiring should always be performed by a qualified individual, following local electrical codes and the manufacturer's instructions. Proper installation ensures reliable operation and maximizes the energy-saving potential of the device.
