Datasheet
MICRO SWITCH Heavy-Duty Limit Switch
HDLS Series
DESCRIPTION
Honeywell’s MICRO SWITCH heavy-duty limit switches’
modular construction allows for a wide variety of actuator
styles, operating heads, and electrical circuitry options. The
plug-in versions greatly reduce downtime on production lines
with high actuation rates as replacement of the switch is
accomplished in seconds. The base receptacle contains all the
wiring and conduit connection while the switching component
with operating head easily assembles to the base and is
attached with two screws.
They are ideal for many applications with demanding indoor
and/or outdoor environments, where they may be subjected
to shock or vibration from equipment, temperature extremes,
dust, splashing water, coolant, and/or hose-directed water.
DIFFERENTIATION
• Sintered bronze bearing on 303 stainless steel operating
shaft for enhanced mechanical life (up to 50 million
actuation cycles) and operational reliability
• All-metal drive train for consistent operating characteristics,
even at high temperature. Lasts longer (without need for
frequent adjustment) than drive trains with plastic parts
• Exclusive teller tab ensures proper torque. When it cannot be
moved, the lever is tight enough to prevent slippage
VALUE TO CUSTOMERS
• NEMA 1, 3, 4, 4X, 6, 6P, 12, 13 and IP65/66/67
environmental sealing for demanding applications
• Industry-leading breadth-of-product offering: HDLS
standard, HDLS harsh-duty epoxy sealed, or the HDLS
stainless steel
• UL, CSA, CE, and CCC approvals for global use
• Rapid customization and design-in time
• Large, existing installation base and channel allows for quick
delivery worldwide
FEATURES
• NEMA 1, 3, 4, 4X, 6, 6P, 12, 13 and IP65/66/67
environmental sealing
• NEMA/IP sealing features twin shaft seals for an extra
measure of protection
• Rugged, corrosion-resistant zinc head and body are
phosphate treated and epoxy coated
• Diaphragm seal between head and body provides an extra
measure of protection
• Multiple connectivity options for international applications
• Fluorosilicone seals available for low temperature
applications, and fluorocarbon seals available for chemically
harsh environments and higher temperature applications
• Secure head-to-body retention with the head in any one of
four positions 90° apart
• Self-lifting pressure plate terminals saves wiring time
• Wide variety of actuators, switch options, and head styles
• Rotary actuated heads are field adjustable for CW actuation,
CCW actuation, or both
• Silver or gold-plated contacts
• Plug-in and non plug-in bodies have identical operating
characteristics and are dimensionally interchangeable
POTENTIAL APPLICATIONS
• Machine tools
• Automotive machine tools
• Material handling
• Outdoor electromechanical structures
• Balers/compactors
• Conveyors
• Food and beverage
• Power plants
• Off-road equipment
• Agricultural equipment
• Valves
• Transportation hubs
PORTFOLIO
The heavy-duty HDLS Series limit switch is part of Honeywell’s
comprehensive and broad limit switch portfolio that includes
global, medium-duty, compact, hazardous area, and specialty
limit switches. To view the entire product portfolio, click here.
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MICRO SWITCH Heavy-Duty Limit Switch, HDLS Series
Unique, all-metal drive
train for consistent operating
characteristics even at high
temperature; lasts longer
(without the need for
frequent adjustment) than
drive trains with plastic parts.
Boss-and-socket
head design for secure
head-to-body retention.
Tracking interchangeability
of actuator levers for single-
and double-pole switches,
plug-in and non-plug-in.
Exclusive teller tab ensures
proper torque. When it cannot
be moved, the lever is tight
enough to prevent
slippage.
Twin shaft seals for an
extra measure of
protection. Optional
fluorocarbon or
fluorosilicone seals.
Front mounting and interchangeability of single- and double-pole switches,
plug-in and non-plug-in with one another and with other switch brands.
Domestic and international
conduit threads.
Rugged, corrosion-
resistant zinc head and
body are phosphate
treated and epoxy
coated.
Diaphragm seal
for exta measure
of protection.
303 stainless steel operating shaft
on sintered bronze bearing for
enhanced mechanical life and operational reliability.
Self-lifting pressure
plate terminals save
wiring time.
Easily identified
grounding terminal
(inside) for compliance
with regulatory standards.
One piece flat gasket: seals better than gaskets that go around
curves and corners. Does not contact the terminals pins to reduce
possibility of fluid migration.
Each switch has four mounting holes; two “through” holes for front mount, and
two tapped holes in back for rear mount
Dual bearings deliver
enhanced mechanical life.
Superior design of plug-in
terminal between switch body
and receptacle maintains electrical
continuity in harsh conditions
of temperature extremes,
equipment vibration, and shock.
Field adjustable operating head
(CW and CCW, CW or CCW)
matches switch to the application.
Figure 1. MICRO SWITCH HDLS Series Features and Options