Description: The ZX21 and ZX21 type DC resistors are specifically designed for precise adjustment of resistors in DC circuits. They have low residual resistance and are essential instruments for electrical laboratories in factories, schools, and research institutions. Multi value resistors can also be used as inspection instruments for temperature indicators and temperature adjustment instruments. ZX21 is an improved version of ZX21, and its stepper disk adopts a light pressure switch with low contact resistance and stable variation.

Main technical performance of ZX21 and ZX21 type DC resistors

1. Range of resistor adjustment: ZX21:9 × (0.1+1+10+100+1000+10000) Ω
ZX21a： 10×（0.1+1+10+100+1000+10000）Ω 
2 Power: Reference power 0.2W, nominal power 0.3W, ultimate power 0.5W

3. Accuracy:

4. Dimensions: ZX21: 180 × 130 × 115 (mm)
ZX21a： 200×135×75(mm) 

5. Quality: less than 2kg