Digital Systems


If you are looking for compact but effective lighting solutions, with an emphasis on quality, the OPTOTRONIC FIT LT2 S LED driver is bound to meet your needs. This constant current regulator is small in size but big on versatility, reliability and performance. It is particularly effective when combined with the PrevaLED Core Z6 Mini to create a bespoke lighting system, but you can use it with any LED installation comprising spotlights, down lights and/or LED panels, in which you need to ensure high quality, flicker-free light and safety, with minimal bulk. This driver comes in three variants for power ranges up to 40 W, giving it a wide scope of application — you can set the current via a resistor to suit your needs. It is easy to integrate and maintain, highly efficient and has a long service life. All of these elements combine to maximize your freedom and creativity when it comes to lighting design, which is why many find this driver so useful in design-led installations such as those in hotels, bars and restaurants. For anybody wishing to create innovative, customized lighting systems using compact luminaires, the OPTOTRONIC FIT LT2 S LED driver is likely to be a great choice.


Product data sheet
Product features
  • Supply voltage: 220…240 V
  • Line frequency: 50 Hz | 60 Hz
  • Line voltage: 198…264 V
  • Safety according to EN 61347-1, 61347-2-13, 62384
  • RI suppression: to EN 55015
  • Line harmonics according to EN 61000-3-2
  • Immunity according to EN 61547
  • Lifetime: up to 100,000 h (temperature at Tc = 65 °C, max. 10 % failure rate)
  • Cable clamp kit for independent mounting
Product benefits
  • Versatile scope of application due to output power range of up to 40 W
  • Fulfill safety requirement due to overload, overtemperature protection
  • High efficiency
  • High quality of light thanks to <1% output ripple current
  • Small housing for flexible luminaire designs
Areas of application
  • Luminaires with flexible current setting (LEDset2)
  • Suitable for indoor SELV installations
  • Suitable for luminaires of protection classes I and II
  • Suitable for downlights, spotlights and LED panels
  • Independent mounting via Cable Clamp Kit possible
Family datasheet

Electrical data

Nominal input voltage 220…240 V
Mains frequency 50…60 Hz
Input voltage AC 198…264 V
Total harmonic distortion 15 %
Power factor λ 0.90
ECG efficiency 84 %
Device power loss 3.0 W
Inrush current 8 A
Max. ECG no. on circuit breaker 10 A (B) 38
Max. ECG no. on circuit breaker 16 A (B) 60
Max. ECG no. on circuit breaker 25 A (B) 90
Surge capability (L/N-Ground) 2 kV
Surge capability (L-N) 1 kV
Nominal output voltage 15…50 V
U-OUT (working voltage) 60 V
Nominal output current 150…500 mA
Output current tolerance ±5 %
Output ripple current (100 Hz) < 1 %
Nominal output power 4.5…17.5 W
Galvanic isolation SELV
Galvanic isolation primary/secondary 3.75 kV

Dimensions & weight

Length 97.0 mm
Width 43.0 mm
Height 29.5 mm
Mounting hole spacing, length 88.0 mm
Mounting hole spacing, width 34.0 mm
Product weight 86.00 g
Cable cross-section, input side 0.5…1.5 mm²
Cable cross-section, output side 0.5…1.5 mm²
Wire preparation length, input side 6.5…7.5 mm
Wire preparation length, output side 6.5…7.5 mm

Colors & materials

Casing material Plastic

Temperatures & operating conditions

Ambient temperature range -20…+50 °C
Maximum temperature at tc test point 75 °C
Max.housing temperature in case of fault 110 °C
Permitted rel. humidity during operation 5…85 %

Maximum 56 days/year at 85 %


ECG lifetime 100000 h

At Tcase = 65°C at Tc point / 10% failure rate

Additional product data

Encapsulated No


Dimmable No
Overheating protection Automatic reversible
Overload protection Automatic reversible
Short-circuit protection Automatic reversible
No-load proof Yes
Max. cable length to lamp/LED module 2.0 m
Suitable for fixtures with prot. class I / II
Type of connection, output side Push terminal

Certificates & standards

Approval marks – approval CE
Standards Acc. to IEC 61347-1/Acc. to IEC 61347-2-13/Acc. to IEC 62384/Acc. to CISPR 15/Acc. to IEC 61000-3-2/Acc. to IEC 61547/Acc. to IEC 61000-3-3
Type of protection IP20

Logistical data

Temperature range at storage -40…85 °C
Commodity code 850440829000



Dimension l x w x h



4052899956995 UNV
4052899957060 VS
228mm x 208mm x 78mm 1826.00g 3.70dm³