United Kingdom Not your location?
Base Rotary Limit Switches

Base Rotary Limit switches are used in an extremely wide range of applications from “top limits” on overhead cranes and hoists to position sensors on roller shutter doors. With a maximum of 4 snap action switches and ratios ranging from 1:15 to 1:1500 all with IP protection from IP42 to IP69K, the Base Rotary Limit switch is an excellent choice particularly when space is at a premium.

Description

Features
A worm gear and a helical toothed gear combined with one or more pairs of straight toothed gears are used for the transmission of the movement from the input shaft to the output shaft. Revolution ratios ranging from 1:15 to 1:1500 result from the use of different combinations of gear wheels between the input shaft and the output shaft, which is connected to the cams operating the switches. Each cam can be set with great accuracy thanks to the cam adjusting screws. Overall dimensions are suitable for assembly in narrow spaces. The auxiliary switches are of the positive opening type.

Options
Base can be equipped with cam sets with a maximum of 6 switches. The limit switch is available with direct control switches to operate directly on the motor. The limit switch can be fitted with a flange for direct coupling to the motor. Different labels and colors are also available.

Materials
Transmission and gear driving shafts are made of stainless steel to prevent oxidation and wear. The gear wheels and the driving bushes are made of self-lubricating techno-polymer material, suitably chosen to reduce the wear to a minimum and to maintain the accuracy of the couplings over time. Sintered bronze bushes are moulded into the base of the limit switch to optimize the shaft rotation and to prevent rubbing with plastic material. Materials and components are wear resistant and protect the equipment against water and dust.

Base dimensions with and without a flange

Ordering Information

Part No.Rated Rev. RatioReal Rev. RatioNo. Cams/SwitchesIP Rating
PFA9165A00150031:151:15,822IP65
PFA9165A00150041:151:15,823IP65
PFA9165A00150051:151:15,824IP65
PFA9165A00200011:201:20,372IP65
PFA9165A00200031:201:20,373IP65
PFA9165A00200021:201:20,374IP65
PFA9165A00250041:251:25,962IP65
PFA9165A00250051:251:25,963IP65
PFA9165A00250061:251:25,964IP65
PFA9165A00500021:501:502IP65
PFA9165A00500031:501:503IP65
PFA9165A00500041:501:504IP65
PFA9165A00750011:751:752IP65
PFA9165A00750031:751:753IP65
PFA9165A00750021:751:754IP65
PFA9165A01030011:1001:103,572IP65
PFA9165A01030031:1001:103,573IP65
PFA9165A01030021:1001:103,574IP65
PFA9165A01580011:1501:158,022IP65
PFA9165A01580031:1501:158,023IP65
PFA9165A01580021:1501:158,024IP65

General specifications

Conformity to Community Directives: 2006/95/CE 2006/42/CE
Conformity to Standards: EN 60204-1 EN 60947-1 EN 60204-32 EN 60947-5-1 EN 60529
Regulations for the prevention of accidents BGV C 1 (only for Germany)
CAN/CSA-C22.2 No 14-10
UL 508
Storage ambient temperature: -40°C/+80°C
Operational ambient temperature: -40°C/+80°C
Protection degree: IP 42, IP65 or IP66/IP67/IP69K
Insulation category: Class II
Maximum rotation speed: 800 rev./min.
Cable entry: Cable clamp M16
Certification: version IP42 or IP65 CE EAC
Certification: version IP 66 / IP 67 / IP 69K CE EAC cURus (up to 4 switches)

Specifications of the microswitches

Utilisation category: AC 15
Utilisation category: AC 15
Rated operational current: 3 A
Rated operational voltage: 250 V
Rated thermal current: 10 A
Rated insulation voltage: 300 V
Terminal referencing: according to EN 50013
Connection PRSL0003XX - 6.3 mm Faston taps
Connection PRSL0011XX - screw-type terminals
Certification CE UL

Brochures & Technical Information