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Solenoid Locking Interlock Safety Switch
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High Holding Force Keeps Guard Doors Closed Until Hazard can be Removed
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8 Actuator Entry Positions–Designed with a Rotatable Head
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KLM Series: Die Cast Metal Body with Die Cast or 316 SS Head
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KLP Series: Polyester Body with 316 SS Head
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KL3-SS Series: 316 SS Body and Head—Mirror Polished to Ra10
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LED Indicators for Status of Solenoid Applied Power (LED1) and Guard Lock Status (LED2)
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2 Normally-Closed (NC) Safety Circuits: Solenoid Lock and Actuator/Guard Wired in Series
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2 Normally-Open (NO) Auxiliary Contacts: One for Indication of Actuator Status and One for Lock Status
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2 Emergency Manual Release Points
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Guard locking switches are
designed to provide robust
position interlock detection for
moving guards and provide a
lock mechanism to keep the
guard closed until the hazard has
been removed. They are tongue
operated and are designed to fit
to the leading edge of sliding or
hinged machine guards to provide
positively operated switching
contacts and provide a tamper
resistant key mechanism that is
not easily defeatable.
Depending upon the risk
assessment for the application,
they can be used independently
to provide positively operated
contacts to EN60947-5-1 or
they can be used in combination
with any dual channel safety
monitoring relays to provide up to
PLe Category 4 to ISO13849-1 or
SIL3 EN62061. They are offered
with a choice of various actuators
to aid installation and maintain
durability throughout the rigorous
applications of Factory Automation,
Packaging, Food Processing,
Pharmaceutical and Petro-
Chemical Industries.
The switch is rigidly mounted
to the frame of the guard or
machine. The actuator is fitted
to the moving part (frame) of the
guard and is aligned to the switch
entry aperture. The actuator
profile is designed to match a cam
mechanism within the switch head
and provides a positively operated
interlock switch. When the actuator
is inserted into the switch the
safety contacts can be closed and
allow the machine start circuit to
be enabled. When the solenoid
receives the required signal the
safety contacts are positively
opened, the machine circuit is
broken and the guard door can
be opened. They can be used in
combination with safety timers to
provide a delay before allowing the
guard to open (e.g. for machines
which require run down). Standard
versions automatically spring lock
at the insertion of the actuator
and will only unlock when power
is applied to the solenoid. These
switches are sealed to NEMA 6
(IP67) and provide long term
protection against moisture ingress.
Specifications
Standards: ISO14119, EN60947-5-1, EN60204-1, ISO13849-1, EN62061 UL508
Safety Classification and Reliability Data:
Mechanical Reliability B10d: 2.5 x 106
operations at 100 mA load
ISO13849-1: Up to PLe depending upon
system architecture
EN62061: Up to SIL3 depending upon
system architecture
Safety Data–Annual Usage: 8 cycles
per hour/24 hours per day/365 days
PFHd: 3.44 x 10-8
Proof Test Interval (Life): 35 years
MTTFd: 356 years
Solenoid Voltage: 110 Vac or 24 Vdc/Vac
(see To Order table)
Solenoid Wattage: 12W
LED2 Supply Voltage: 24 Vdc
Utilization Category: AC15 A300 3A
Thermal Current (lth): 5A
Rated Insulation/Withstand Voltages:
600 Vac/2500 Vac
Travel for Positive Opening:
10 mm (0.39")
Actuator Entry Minimum Radius:
Standard: 175 mm (6.89")
Heavy-Duty: 100 mm (3.93")
Maximum Approach/Withdrawal
Speed: 600 mm/s
Holding Force:
KLP Series: F1Max, 1800N, Fzh 1384N
KLM, KL3-SS Series: F1Max, 2000N, Fzh 1538N
Body Material:
KLM Series: Die cast (painted red)
KLP Series: Polyester
KL3-SS Series: 316 Stainless Steel
Head Material:
KLM Series: Die cast (painted red) or 316 stainless steel
KLP Series: 316 stainless steel
KL3-SS Series: 316 stainless steel
Enclosure Protection:
KLM, KLP Series: NEMA 6 (IP67)
KL3-SS Series: NEMA PW12 (IP67K), NEMA 6 (IP67)
Operating Temperature: -25 to 50°C (-13 to 122°F)
Vibration: IEC 68-2-6 10 to 55 Hz +
1 Hz; excursion: 0.35 mm 1 octave/min
Conduit Entry: 1/2 NPT or M23
12-way (see To Order table)
Fixing: 4 x M5
Weight (of Switch):
KLM Series: 770 g (1.7 lb), 795 g (1.75 lb) with SS head
KLP Series: 575 g (1.3 lb)
KL3-SS Series: 1290 g (2.85 lb)
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† All dollar amounts on this site are shown in US currency.
Note: *KLM, KLP and KL3-SS Series guard locking safety switches (switch only, actuator sold separately).
Ordering Example: (1) 140107 Standard actuator, USD$415.00,
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