B-stock refers to second-grade goods; this may be for various reasons, such as returned goods, samples and display items, as well as items with damaged or missing original packaging. The items may have minor defects, i.e. signs of use; however, this does not affect the item’s functionality.
Electronic speed controller STL5 from 0.2 - to 5 amps, ideal for the control of fans and ventilators.
The electronic speed controller of the STL series controls the speed of single phase, through voltage controllable motors (230 Vac - 50 Hz), by changing the supply voltage using a phase angle control. A potentiometer and a separate lighted on/off switch is integrated. The slowest allowed speed can be set internally by a small trimmer (factory setting = 100 V). The connecting plate has an additional connection to circumvent the ON/OFF switch (automatic start), or to branch uncontrolled 230V (three-wire motor connection, valve, flap, etc.)
There are two operating modes, internally selectable by adding or removing the red jumper on the STK.
1. "Hard" start: The motor will always start (or restart) at the max. speed for 8-10 seconds, afterwards the motor speed will adjust automatically to the position that is determined by the potentiometer.
2. "Normal" start: The motor starts according to the position set by the potentiometer. The IP 54 housing permits the use as well in demanding environments.
Technical details:
- Rated current (A) 0.2 - 5.0 A
- Supply voltage: 230 V AC 50 Hz
- Dimensions L 160mm x W 83mm x H 81mm
- Continuous speed control
- Minimum speed adjustable by trimmer
- Illuminated On/Off switch
- Max. ambient temperature: 35° C (95° F)
- Plastic housing (R-ABS, UL94-V0, gray RAL 7035)
- IP 54
