Datasheet
MICRO SWITCH Premium Subminiature Basic Switches
SM Series
DESCRIPTION
The industry-defining name in snap-action switches,
Honeywell MICRO SWITCH premium subminiature switches
are designed for repeatability and enhanced product life. The
MICRO SWITCH SM Series delivers consistent performance
within a range of conditions.
The MICRO SWITCH SM Series’ small size and light weight are
combined with ample electrical capacity, precision operation,
and extended life. Featuring high precision and repeatability,
the SM Series offers gold contacts for low-energy switching
and gold bifurcated contacts for maximum reliability.
Bifurcated contacts provide parallel redundancy within the SM
switch.
The SM switch is available for power-duty switching up to 11 A
(Vac) or 1/4 HP (Vac).
DIFFERENTIATION
• Very wide temperature range allows for years of reliable
performance in the harshest of conditions
• MILPRF8805 qualified listings
• Operating forces as low as 0,06 N [6 g] and differential travel
as low as 0,025 mm [0.001 in] delivers consistent, precise
switch characteristics
FEATURES
• Industry-leading mechanical life of up to 10,000,000
operations
• Selection of actuation, electrical termination, and operating
characteristics along with high-temperature construction
options
• Wide temperature range of 54°C to 204°C [65°F to 400°F]
• MILPRF8805 qualified listings in a lightweight, small
package
• FAAPMA approvals for commercial aircraft
• Choice of silver or gold-plated, or gold bifurcated contacts to
handle a variety of electrical load requirements
• UL/CSA, cUL, ENEC, and CE approvals
VALUE TO CUSTOMERS
• Industry-leading life cycle rating reduces the need to
replace switches over life in an OEM platform – reducing
total system cost
• Low operating forces
• Mil-qualified listings
• Life of up to 10,000,000 cycles
POTENTIAL APPLICATIONS
• Precision switch assemblies for commercial aircraft to
monitor doors for “closed” and “locked” position
• Landing gear monitor
• Precision switch assemblies for commercial cockpit
applications for pushbuttons, toggle, or joystick assemblies
• Precision switch assemblies in military applications
• Assemblies for industrial pressure switches and temperature
switches
• Power generation fuel level (gas and oil)
PORTFOLIO
The SM Series of premium subminiature basic switches are
a part of a strong offering of submins including SX Series
(premium) and ZM, ZM1, ZD, ZX, and ZW Series (standard)
switches.
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MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Table 1. Specifications
Characteristic Parameter
Differentiator
low operating force to 2 oz. max; power load switching capability to 11 A; motor load handling capacity to 1/4
HP (Vac)
Ampere rating 0.1 A to 11 A
Circuitry SPDT
Operating force 0.04 oz to 2 oz
Termination quick connect, solder, pcb
Actuator pin plunger, straight lever, roller lever, simulated roller lever, paddle lever
Voltage 115 Vac, 125 Vac, 250 Vac, 30 Vdc
Agency approvals UL, CE, CSA, ENEC, MILPRF8805, FAAPMA
Agency file information CE: 610581; UL: E12252; CSA: LR41372
Operating temperature 54°C to 121°C [65°F to 250°F]; select catalog listings 204°C [400°F]
Contacts silver, gold plated, bifurcated gold
Housing phenolic
Sealing sealed plunger on 411SM Series, other SM Series not weather sealed
Mechanical life
up to 10,000,000 operations for 11SM listings
up to 80,000 operations for 1SM/41SM listings
up to 1,000,000 operations for gold bifurcated contact
Size 12,7 mm H x 6,35 mm W x 20,3 mm L [0.5 in H x 0.25 in W x 0.8 in L]
Electrical data and UL codes
Table 2. UL Electrical Ratings
Code Circuitry Electrical data and UL codes
J SPDT
5 A res., 3 A ind., (sea level),
5 A res., 2.5 A ind., (50,000 feet), 28 Vdc. UL rating: 5 A, 250 Vac
K SPDT UL rating: 5 A, 125 or 250 Vac
M SPDT UL rating: 11 A and 1/4 hp, 125 or 250 Vac
N SPDT 1 A res., 0.5 A ind., 30 Vdc. UL rating: 1 A, 125 Vac
P SPDT 1 A res., 30 Vdc. UL rating: .1 A, 125 Vac
R SPDT
5 A res., 3 A ind., 2.4 A lamp load (sea level),
5 A res., 2.5 A ind., 2.4 A lamp load, (50,000 feet), 28 Vdc.
5 A res., 5 A ind., 1.5 A lamp load, 115 Vac. 60 Hz (sea level)
S SPDT UL rating: 4 A, 250 Vac