This is one of our wire protector terminal blocks. It's usually used in power supply.
 

The case is PA66, UL94V-0 and the conductors are brass, and tin plated. The screws are M2.0, C1018 steel and zinc Plated. The voltage is 250V. The current rate is 10A. And the electrical withstanding is AC2000V, 1minute. The isolation resistance is DC500V, 500MΩ. The wire range is 24-16 AWG. The max torque is 2.5kgf.cm and operation temperature is -33℃~+105℃.