55NM81-000-1
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The 55NM81-000-1 is a panel-mounted micro switch with a SPDT contact configuration and a silver alloy contact material. Manufactured by Pacific Scientific as part of the Low Inertia PMDC Servomotors series, it operates within a temperature range of -25°C to 85°C and features an IP67 ingress protection.
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Product Description:
The 55NM81-000-1 micro switch is produced by Pacific Scientific and rolls out as part of their Low Inertia PMDC Servomotors lineup. The design leans on a panel-mount approach, and a plunger actuator drives the switching action. Size stays compact, but the main focus lands on the working end — that SPDT contact configuration built from silver alloy. Installation uses screw terminals, which keep the connection tight, especially in older or more vibration-prone panels. The panel mount method fits well near other control devices, making access for checks and swaps quick when production stops aren’t welcome.
During busy operation, the 55NM81-000-1 holds steady through its electrical rating of 10A at 250VAC, giving it enough flexibility for common control lines in machines that cycle a lot. This unit is rated normally open, so its main contacts stay separated until the plunger gets pushed in by moving components. The mechanical internal build lets the switch hit a mechanical life of 10,000,000 cycles and an electrical life of 500,000 cycles, so it’s all set for big-volume automation, pressing, or packaging lines. Switching happens lightning-fast—0.1 ms— which means minimal lag during stop/start actions. For high-repetition machines, even a little speed matters.
The housing sticks with thermoplastic, which shrugs off smaller knocks and stays reliable even if foot traffic bumps up against it. An IP67 ingress protection rating shuts out both dust and most water (even full washdowns won’t trouble it). This micro switch keeps going from -25°C to 85°C, answering for cold starts or the heat from motors piled close by. Everything is wrapped to hold out in direct industrial spaces, manufacturing, robotics, or conveyor setups where mistakes aren’t an option. Parts from Pacific Scientific have a habit of staying at work long after cheaper switches have failed or gotten stiff.
Frequently Asked Questions about 55NM81-000-1:
Q: What is the contact configuration and contact material of the 55NM81-000-1 micro switch?
A: The 55NM81-000-1 micro switch has a SPDT contact configuration and uses a silver alloy contact material.
Q: What is the operating temperature range and ingress protection rating of this Pacific Scientific micro switch?
A: This micro switch operates within a temperature range of -25°C to 85°C and features an IP67 ingress protection rating.
Q: What is the actuator type and mounting method of the 55NM81-000-1 micro switch?
A: The micro switch features a plunger actuator type and is designed for panel mounting.
Q: What are the mechanical and electrical life expectancies of the 55NM81-000-1?
A: The 55NM81-000-1 has a mechanical life of 10,000,000 cycles and an electrical life of 500,000 cycles.
Q: What electrical rating does the 55NM81-000-1 provide, and what terminal type is used?
A: The 55NM81-000-1 has an electrical rating of 10A at 250VAC and uses a screw terminal type.
