V-156-1C25 Long Hinge Lever Micro Switch – 15A Industrial Limit Switch for CNC, Automation, and 3D Printers
When an endstop fails, your entire machine is at risk. Whether you are outfitting a CNC mill, a 3D printer, or an industrial automation system, you need a limit switch that provides instant, reliable switching every single time. The V-156-1C25 micro switch with its long hinge roller lever does exactly that—no oscillation, no signal uncertainty, and no compromises.
Note: This set contains 6 identical V-156-1C25 units. Images are for illustrative purposes showing a single unit. Please verify electrical compatibility (voltage and current) prior to installation.
Why choose this model? (Key Advantages):
- 15A AC rating — handles real-world loads, controlling small motors up to 1/2 Hp directly without the need for an intermediate relay, simplifying your wiring.
- Long hinge lever with roller — detects position at a distance from the switch body, eliminating the need for millimetre-perfect alignment during installation.
- Snap-action momentary — the NO↔NC transition occurs instantaneously regardless of actuation speed, providing a clean digital signal for any PLC or microcontroller.
- 3-terminal COM/NO/NC — connect according to your required logic without hardware modifications; suitable for both safety circuits and signalling.
- AC and DC compatible — rated for 125V/250V AC or 125V/250V DC; one versatile model covers most existing installations.
- Set of 6 pieces — significantly lower cost per unit compared to individual purchases; includes spare stock for rapid maintenance.
- Compact 2.79 × 1.60 cm body — integrates easily into space-constrained areas, with secure mounting via 0.33 cm diameter holes.
Details and Performance
The geometry of the long hinge lever allows for triggering at a wider angle relative to the body, which translates to greater mechanical tolerances during installation and lower actuation force compared to short-lever variants. Essentially, you can mount faster and adjust the trigger point with ease.
The snap-action mechanism ensures that the transition between Normally Open (NO) and Normally Closed (NC) occurs abruptly, whether the lever moves slowly or rapidly. The result is no signal noise and no ‘grey areas’—exactly what Arduino, Raspberry Pi, CNC controllers, and PLCs require for predictable operation.
With a 15A at 250V AC rating, the V-156-1C25 falls into the heavy-duty industrial micro switch category—this is a serious production-grade component, not just a prototype part. For DC applications, it is rated at 0.6A/125V and 0.3A/250V, complying with standard arc-suppression requirements for continuous switching.
| Parameter | Value / Detail |
|---|---|
| Model | V-156-1C25 |
| AC Electrical Rating | 15A, 1/2 Hp, 125V AC / 250V AC |
| DC Electrical Rating | 0.6A at 125V DC / 0.3A at 250V DC |
| Contact Configuration | 1NO + 1NC (3 terminals: COM, NO, NC) |
| Actuator Type | Long hinge lever with roller |
| Switching Mechanism | Snap-action momentary |
| Switch Body Dimensions | 2.79 × 1.60 × 0.99 cm |
| Actuator Dimensions (lever) | 5.08 × 0.41 cm |
| Mounting Hole Diameter | 0.33 cm |
| Body Material | Plastic + metal |
| Colours | Red, black, silver |
| Weight per unit | 8g |
| Quantity in set | 6 pieces |
| Typical Applications | CNC, industrial automation, 3D printers, electronic equipment, safety systems |
Package Contents
- 6 × V-156-1C25 long hinge roller lever limit switches
Frequently Asked Questions
What does 1NO + 1NC configuration mean and how do I connect it?
The switch features 3 terminals: COM (common), NO (Normally Open — circuit open at rest), and NC (Normally Closed — circuit closed at rest). When the lever is actuated, the NO contact closes and the NC contact opens simultaneously. Simply choose the terminal that corresponds to your circuit logic.
Is this suitable for 3D printers and CNC machines?
Yes. The V-156-1C25 is a widely used endstop for Cartesian and CoreXY 3D printers, as well as hobbyist and semi-industrial CNC machines. The long roller lever allows for easy adjustment of the trigger point without needing to disassemble your setup.
Can it be connected directly to an Arduino or Raspberry Pi?
Yes, you can connect the NO or NC terminals to the digital pins of your microcontroller using an internal or external pull-up resistor. Please ensure you do not mix 3.3V/5V TTL logic circuits with 15A/250V AC power lines.
How does it differ from a short-lever micro switch?
The long lever offers a greater actuation travel and lower trigger force, making it more sensitive and easier to integrate where mechanical tolerances are wider. Short levers are generally preferred when space is extremely limited and higher actuation force is available.
Does the set include mounting screws or connectors?
No. The set contains only the 6 V-156-1C25 units. Mounting screws and electrical connectors should be purchased separately based on your specific application requirements.
Is it dimensionally compatible with other V-15x series switches?
Yes. The V-156 series adheres to the standard SPDT general-purpose footprint, making it dimensionally compatible with most equipment that utilises V-15x family switches.
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