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311SM2

Description
Basic / Snap Action Switches BASIC SW SPDT 5 A 250Vac STR LVR ACTR
CategoryMechanical and electronic products    switch   
File Size860KB,8 Pages
ManufacturerHoneywell
Websitehttp://www.ssec.honeywell.com/
Environmental Compliance
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311SM2 Overview

Basic / Snap Action Switches BASIC SW SPDT 5 A 250Vac STR LVR ACTR

311SM2 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Reach Compliance Codeunknown
ECCN codeEAR99
Actuator stroke3.71 mm
body width6.35 mm
body height9.04 mm
Body length or diameter19.81 mm
Contact (AC) maximum rated R load5A@250VAC
Maximum contact current (AC)5 A
Maximum contact current (DC)5 A
Contact (DC) maximum rated R load5A@30VDC
Maximum contact voltage (AC)250 V
Maximum contact voltage (DC)30 V
Manufacturer's serial number311SM2
Installation featuresPANEL MOUNT
Maximum operating force0.31 N
Maximum operating temperature121 °C
Maximum pre-travel3.05 mm
surface mountNO
Switch actionMOMENTARY
switch functionSPDT
Switch typeSNAP ACTING/LIMIT SWITCH
Termination typeWIRE
Base Number Matches1
MICRO SWITCH Premium Subminiature Basic Switches
SM Series
004959
Datasheet
Issue 3
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
DESCRIPTION
VALUE TO CUSTOMERS
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).
• 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
DIFFERENTIATION
• 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)
• 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
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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