Standard Heavy Duty
Limit Switches FD/FP/FL
Heavy duty limit switches with snap-action contacts and
positive break according to BS/EN60947-5-1.
■Bifurcated contacts for low resistance and high reliability
– suitable for switching low-level electronic currents
■Double-break contacts with electrically separate NO and
NC circuits in conformity with VDE 0660 part 206
■10A 500VAC/600VDC rated
■Lever types can be user-set to switch by clockwise
movement only, anti-clockwise only or both
■Turret head position rotatable in 90˚ increments
■Centre-position indicator arrow – lever actuators
■Wide range of actuators
■Single and triple cable entry models
■Removable contact block for ease of wiring
■Metal or plastic housing options
■IP66 according to BS EN60947-1
■FD and FP dimensions in accordance with EN50041
■Approvals: UL, CSA
Options and ordering codes
Specifications
Contact ratings Terminal connections
FD
FP
FL
5
6
7
9
10
11
20
21
22
2
–
385
L313
L353
L354
FD 5 01
Heavy duty metal housing
Heavy duty plastic housing
Triple entry metal housing
Snap-action contacts, 1NO + 1NC
Slow-action, break before make 1NO + 1NC
Slow-action, make before break 1NO + 1NC
Slow-action contacts, 2NC
Slow-action contacts, 2NO
Snap-action contacts, 2NC
Slow-action contacts, break before make 2NC + 1NO
Slow-action contacts, break before make 3NC
Slow-action contacts, break before make 1NC + 2NO
Snap-action contacts, 2NO + 2NC
Standard actuators – options overleaf
38 Lift-style turret with 75˚ total travel
Lift-style turret with 90˚ total travel
Specify lever type for lift-style switch:
Fixed position roller
Single adjustment roller
Dual adjustment roller
Please note: Positive break
applies to the NC contacts of
types 5, 6, 7, 9, 11, 20, 21
and 22 only.
Rated thermal current Ith 10A
Rated working voltage 500VAC/600VDC
Maximum operating frequency 6000/hour
Mechanical life >20 million operations
Contact form 1NO + 1NC
Initial contact resistance <25 mOhms
Contact gap >2.5mm (2 x 1.25mm conforming to VDE 0660 part 206)
Contact material silver
Dielectric strength 2000VAC, 50/60Hz for 1 minute between open contacts
2000VAC, 50/60Hz for 1 minute between current-carrying parts and ground
Protection rating IP66
Ambient operating temperature –25 to +80 deg. C
Ambient humidity 95% R.H.
Maximum wire size 2 x 1.5mm2flexible, 2 x 2.5mm2solid
Housing material FD/FL: die-cast metal alloy, FP: self-extinguishing, glass-reinforced, thermoplastic resin
Conduit entry PG 13.5
BS/EN 60947-5-1
AC15 – Control of AC electromagnetic 230VAC 6A
loads>72VA sealed – replaces AC11 400VAC 4A
500VAC 1A
DC13 – Control of DC electromagnetic 24VDC 6A
loads where the time taken to reach 125VDC 1.1A
95% of the rated current is equal to 250VDC 0.4A
6 times the power of the load (where P<50W) – replaces DC11
Terminal screws: M3.5 with rising cable clamps.
Standard contacts (type 5) NO: 13-14, NC: 21-22
Note: The positive break of the type 5 contact block applies to the NC contacts
only. Connections to safety circuits should NOT be made using the NO
contacts.
To ensure positive breaking of the contacts, exceed the pre-travel by 1.5mm or
25˚ according to the model.
Maximum screw tightening torque 0.8Nm (8Kg cm)
New
Models
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Programmable head – lever operation models
Standard actuator options – FD and FP series
FD/FP/FL
Actuator type 01
Piston plunger
Operating force min. OF 820g
Pre-travel PT 2mm
Over-travel OT 4mm
Movement differential MD 1mm
Operating point OP 22mm
Operating speed max. OS 0.5m/s
Actuator type 02
One-way roller - top actuated
OF 615g
PT 2.9mm
OT 5.6mm
MD 1.6mm
OP 49.1mm
OS 0.5m/s using a 30˚ cam
Note: ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.: 021
Actuator type 11
Long piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 35mm
OS 0.5m/s
Actuator type 10
Sealed piston plunger
OF 1125g
PT 2mm
OT 4mm
MD 1mm
OP 35mm
OS 0.5m/s
Actuator type 05
One-way roller-side actuated
OF 615g
PT 2.9mm
OT 5.6mm
MD 1.6mm
OP –
OS 0.5m/s using a 30˚ cam
Note: ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.: 051
All limit switches with lever operation in the FD/FP/FL ranges can be user-set to switch by clockwise rotation only, anti-
clockwise only or both. To change the operation, which is factory set to switch in both directions, the four screws securing
the turret head should be loosened, the head removed and the internal piston rotated through 90˚. The head should then be
replaced.
The models to which this applies are: 531; 532; 533; 535; 536; 538; 551; 552; 553.
Figure 1 shows the piston position for switching in both directions, figure 2 for clockwise only and figure 3 for anti-
clockwise only.
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Standard actuator options – FD and FP series
FD/FP/FL
Actuator type 15
Sealed roller piston plunger
OF 1125g
PT 2mm
OT 4mm
MD 1mm
OP 48mm
OS 0.5m/s using a 30˚ cam
Note: ø13mm metal roller only
Actuator type 20
Sealed coil spring with flexible rod
OF 125g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20, 21
or 22
Actuator type 18
Rolling ball piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 39mm
OS 0.5m/s
Actuator type 16
Roller piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 48mm
OS 0.5m/s using a 30˚ cam
Note: ø13mm metal roller only
Actuator type 21
Sealed coil spring with cat’s whisker
OF 92g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20,
21 or 22
Actuator type 32
Adjustable round steel rod lever
Actuator type 33
Adjustable square steel rod lever (rod
3x3x125)
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Note: Lever position adjustable over 360˚ in
10˚ increments
Actuator type 31
Roller-lever with small offset
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:311; ø35mm
plastic roller actuator part no.:312; ø50mm rubber
roller actuator part no.:313. 2. Lever position
adjustable over 360˚ in 10˚ increments
Actuator type 25
Sealed coil spring
OF 195g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20,
21 or 22
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Standard actuator options – FD and FP series
FD/FP/FL
Actuator type 35
Adjustable roller lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:351; ø35mm
plastic roller actuator part no.:352; ø50mm rubber
roller actuator part no.:353. 2. Lever position
adjustable over 360˚ in 10˚ increments
Actuator type 40
Dual roller lever with two stable free
positions
Specify lever type:
Double track (shown above) L42
Single track (not shown) L41
Steel rod lever L43
Actuator type 38+L34
Coiled spring lever with flexible rod
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Notes: 1. Not suitable for safety circuits.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 36
Adjustable glass-fibre rod lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Notes: 1. Not suitable for safety circuits.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 52
Roller lever without offset
OF 920gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:521; ø35mm
plastic roller actuator part no.:522; ø50mm rubber
roller actuator part no.:523. 2. Lever position
adjustable over 360˚ in 10˚ increments
Actuator type 51
Roller-lever with large offset
OF 920gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:511.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 76
Rope
OF 2450g
PT 1.8mm
OT 6.4mm
MD 1mm
OP 66.8mm
OS –
Note: Not suitable for safety circuits. For
rope operated safety switches, see Safety
Limit Switches data sheet on page 297
Actuator type 53
Porcelain roller lever
OF 615gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS –
Note: Lever position adjustable over 360˚ in
10˚ increments
Only available in FD series
(metal case), not FP series
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Standard actuator options – FL series
FD/FP/FL
Actuator type 01
Piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 23mm
OS 0.5m/s
Actuator type 02
One-way roller - top actuated
OF 615g
PT 2.9mm
OT 5.6mm
MD 1.6mm
OP 49.1mm
OS 0.5m/s using a 30˚ cam
Note: ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:021
Actuator type 04
Piston plunger with adjustable glass-
fibre rod lever
OF
PT
OT Variable – dependent on
MD glass-fibre rod position
OP
OS
}
Actuator type 05
One-way roller - side actuated
OF 615g
PT 2.9mm
OT 5.6mm
MD 1.6mm
OP –
OS 0.5m/s using a 30˚ cam
Note: ø20mm plastic roller as standard, ø20mm
metal roller actuator part no.:051
Actuator type 10
Sealed piston plunger
OF 1125g
PT 2mm
OT 4mm
MD 1mm
OP 35mm
OS 0.5m/s
Actuator type 16
Roller piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 48mm
OS 0.5m/s using a 30˚ cam
Note: ø13mm metal roller only
Actuator type 18
Rolling ball piston plunger
OF 820g
PT 2mm
OT 4mm
MD 1mm
OP 39mm
OS 0.5m/s
Actuator type 15
Sealed roller piston plunger
OF 1125g
PT 2mm
OT 4mm
MD 1mm
OP 48mm
OS 0.5m/s using a 30˚ cam
Note: ø13mm metal roller only
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Standard actuator options – FL series
FD/FP/FL
Actuator type 20
Sealed coil spring with flexible rod
OF 125g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20,
21 or 22
Actuator type 25
Sealed coil spring
OF 195g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20,
21 or 22
Actuator type 21
Sealed coil spring with cat’s whisker
OF 92g at 2
/3the length of the actuator
PT 14˚
OT –
MD 7˚
OP –
OS 1m/s
Notes: Not suitable for safety circuits
Not suitable for use with contact blocks 20,
21 or 22
Actuator type 31
Roller lever with small offset
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard, ø20mm
metal roller actuator part no.:311; ø35mm plastic
roller actuator part no.:312; ø50mm rubber roller
actuator part no.:313. 2. Lever position adjustable
over 360˚ in 10˚ increments
Actuator type 32
Adjustable round steel rod lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Note: Lever position adjustable over 360˚ in
10˚ increments
Actuator type 33
Adjustable square steel rod lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Note: Lever position adjustable over 360˚ in
10˚ increments
Actuator type 36
Adjustable glass-fibre rod lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s
Notes: 1. Not suitable for safety circuits.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 35
Adjustable roller lever
OF 1530gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.:351; ø35mm
plastic roller actuator part no.:352; ø50mm rubber
roller actuator part no.:353. 2. Lever position
adjustable over 360˚ in 10˚ increments
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Standard actuator options – FL series
FD/FP/FL
Actuator type 40
Dual roller lever with two stable free
positions
Specify lever type:
Double track (shown above) L42
Single track (not shown) L41
Steel rod lever L43
Actuator type 51
Roller lever with large offset
OF 920gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.: 511.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 52
Roller lever without offset
OF 920gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS 1.5m/s using a 30˚ cam
Notes: 1. ø20mm plastic roller as standard,
ø20mm metal roller actuator part no.: 521;
ø35mm plastic roller actuator part no.: 522;
ø50mm rubber roller actuator part no.:523.
2. Lever position adjustable over 360˚ in 10˚
increments
Actuator type 76
Rope
OF 2450g
PT 1.8mm
OT 6.4mm
MD 1mm
OP 66.8mm
OS –
Note: Not suitable for safety circuits. For
rope operated safety switches, see Safety
Limit Switches data sheet on page 217
Actuator type 53
Porcelain roller lever
OF 615gcm
PT 30˚
OT 45˚
MD 14˚
OP –
OS –
Note: Lever position adjustable over 360˚ in
10˚ increments
Glossary
The following is a glossary of terms in
specifying actuator characteristics:
Operating force (OF)
The force applied to the actuator
required to operate the switch contacts.
Releasing force (RF)
The value to which the force on the
actuator must be reduced to allow the
contacts to return to the normal
position.
Total force (TF)
The force applied to the actuator
required to reach the stopper from the
free position.
Free position (FP)
The initial position of the actuator when
there is no external force applied.
Operating position (OP)
The position of the actuator at which
the contacts snap to the operated
contact position measured with respect
to the centres of the mounting holes.
Releasing position (RP)
The position of the actuator at which the
contacts snap from the operated contact
position to their normal position.
Total travel position (TTP)
The position of the actuator when it
reaches the limit of travel – must not be
exceeded.
Pretravel (PT)
The distance or angle through which
the actuator moves from the free
position to the operating position.
Overtravel (OT)
The distance or angle of the actuator
movement beyond the operating
position.
Movement differential (MD)
The distance or angle from the
operating position to the releasing
position.
Total travel (TT)
The sum of the pretravel and overtravel
expressed by distance or angle.
FP
PP
OP PT
MD MD
PT TT
TTP TTP
RF AP
OP
OF RF TFMD
OT
Operate Release
PT
OP TTP
RP TT
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FD/FP/FL
Lift-style switches
Replacement contact blocks
Cable glands
Plug and socket limit switches
FD538 or FD5385 or FD938 + L313
FP538 or FP938 + L313
Turret type 38
Lever type L313 (fixed position roller)
FD538 or FD5385 or FD938 + L353
FP538 or FP938 + L353
Turret type 38
Lever type L353 (single adjustment roller)
FD538 or FD5385 or FD938 + L354
FP538 or FP938 + L354
Turret type 38
Lever type L354 (dual adjustment roller)
All FD/FP/FL series limit switches can be converted to a plug-in style
by the addition of an adaptor.
The adaptor is screwed into the limit switch and the four flying leads
connected to the four terminals of the contact block.
Suitable 4-wire plug leads are available – see pages 332 to 335.
Ratings 250VAC/300VDC
3A
IP67
1NO+1NC Positive break
B5 Snap action Zb
standard contact block
1NO+1NC Positive break
B6 Slow action Zb
break before make
1NO+1NC Positive break
B7 Slow action Zb
make before break
2NC Positive break
B9 Slow action, contacts
11-12, 21-22 open at the
same time Zb
B14 Positive break
Slow action, contacts 11-12 open first, further
actuator travel causes contacts 21-22 to open
2NO Slow action, contacts
B10 13-14, 23-24 close at the
same time
B15 Slow action, contacts 13-14 close first, further
actuator travel causes contacts 23-24 to close
2NO+2NC
B2 Snap action, double pole
Cable glands are available to enable standard multi-core cables to be connected without the use of conduit.
Three sizes are possible:
Part number PG13.5 Cable size ø9-12mm Part number PG13.5/6 Cable size ø6-9mm
Part number G13.5 Cable size ø9-12mm (type FD only)
13
14
21
22
13
14
21
22
13
14
21
22
11
12
21
22
13
14
23
24
13
14
21
22
43
44
31
32
300mm
flying leads
Part number
8R4D26E03C3003
■Three lever options.
■FL model also available with a choice of lever.
■Age-resistant and oil-resistant rubber rollers.
■Lever position adjustable over 360˚ in 10˚ increments.
■Head rotatable in 90˚ increments.
■User-selectable to switch by clockwise movement only, anti-
clockwise only, or both.
■Glass-reinforced thermoplastic resin model (FP) double
insulated for electrical safety.
■Die-cast metal alloy models (FD and FL) include earth
terminal.
Types L353 and L354 have a location slot at the end to lock the levers at full extension if required.
Type G13.5 Types PG13.5 and PG13.5/6
EXAMPLES
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