The MJ2-1305 from Moujen Taiwan is a top plunger push type micro limit switch from the MJ2 series. The plunger sits on top of the body and operates when a cam, slide or machine part presses straight down onto it, making it the right choice wherever the moving part travels in line with the switch rather than across it.

A top plunger is the most compact actuator available, which is why it fits into jigs, fixtures and tight machine spaces where a lever would have nowhere to swing. There is no overhang to catch on anything, and the short travel gives a precise, repeatable trip point.

Electrically the MJ2-1305 is rated 15A at 125 or 250V AC, with a quarter horsepower capability at 250V AC, so it can switch a small motor directly instead of driving a contactor coil. DC ratings cover 1/2A at 125V and 1/4A at 250V for signal duty into a controller. IP55 protection handles dust and low pressure water, which suits most indoor machine and workshop conditions. UL Listed and CE Mark approvals cover it for export equipment.

Key Features

Top plunger push actuator for in line contact from above
Most compact actuator option, fits tight jigs and fixtures
Short, repeatable trip point with no overhanging lever
15A rating at both 125V and 250V AC
Quarter HP motor switching at 250V AC
Fine operating speed range from 0.01mm per second
IP55 protection against dust and low pressure water
UL Listed and CE Mark certified Moujen product from Taiwan

Technical Specifications

Specification	Detail
Actuator Type	Top Plunger Push Actuator Type
Range of Product	MJ2 Series
Rating	15A at 125 or 250V AC
Rating	1/8 HP at 125V AC
Rating	1/4 HP at 250V AC
Rating	1/2A at 125V DC
Rating	1/4A at 250V DC
Operating Speed	0.01mm to 1m/sec
IP Degree of Protection	IP55
Standard Certification(s)	UL Listed, CE Mark
Make / Brand	Moujen
Country of Origin	Taiwan
Weight	0.07kg
SKU	MJ21305

Common Applications

Jig and fixture position confirmation, tool and slide travel detection on machine tools, die and press position sensing, door and cover closed detection, vending and dispensing mechanisms, small motor switching without a contactor, and any point where a part presses straight down onto the switch in a confined space.

Related Products in Limit and Micro Switches

Browse the complete Limit and Micro Switches category for the full range of actuators, ratings and IP grades, or go straight to the 15A Micro Switch collection for switches at this current rating.

If the moving part approaches from the side rather than from above, a lever or roller suits better. The roller plunger limit switch AM-1308 shares the 15A rating but adds a roller on top of the plunger to cut wear from sliding cams. The lever limit switch AZ-7120 is a side mount unit, and the cross roller plunger limit switch ME-8122 accepts a push from more than one direction.

For adjustable reach, the adjustable roller lever mini limit switch AZ-8108 and the adjustable rod limit switch AZ-8107 let you set the actuator to the gap. Where sealing matters more, the spring limit switch AZ-8166 is IP65 rated and the big wheel limit switch AZ-5108L is IP67 for outdoor and heavy equipment duty.

Why Buy From Qahraba

Qahraba supplies electrical contractors, panel builders and machine builders across the UAE and worldwide. Every Moujen switch we stock is genuine product with full certification. Local UAE orders ship within 1 to 2 working days and we ship globally at checkout, or collect from our Dubai store. Call or WhatsApp +971 52 913 9543 for bulk pricing or technical help.

FAQ,s

What is the MJ2-1305 used for?

It detects when a moving part reaches a set position. The part presses down on the top plunger, the contacts change over, and the signal tells the machine to stop, reverse or move to the next step.

What is a top plunger actuator?

It is a short push rod on top of the switch body. The moving part presses straight down onto it, so the switch needs no clearance for a swinging lever and fits into very tight spaces.

When should I use a plunger instead of a roller or lever?

Use a plunger when the part comes down in line with the switch and does not slide across it. If a cam slides past, choose a roller so friction does not wear the plunger head.

Can the MJ2-1305 switch a motor directly?

Yes, up to a quarter horsepower at 250V AC and an eighth at 125V AC. Larger motors should run through a contactor with the switch driving the coil.

Is IP55 enough for a workshop?

IP55 resists dust and low pressure water, which covers most indoor machine and workshop conditions. For washdown or coolant heavy areas, choose an IP65 or IP67 rated model instead.

Is Moujen the same quality as Auspicious?

Both are established Taiwanese switch manufacturers and both carry UL and CE approval. Choice usually comes down to the exact actuator, rating and IP grade you need rather than the brand.

Top Plunger Push Type Micro Limit Switch 15A IP55 MJ2-1305 Moujen Taiwan