Terminal blocks are used to connect two electrical wires within a switchgear. Various types of thermoplastics, duroplastics or even technical ceramics are used to insulate the potentials between the components. The requirements for the properties of the insulating material depend on the industry, the environmental conditions and the application.
The quality and choice of the right insulation material for terminal blocks can therefore have a major impact on the performance, reliability and safety of the entire switchgear. We attach the highest priority to the quality of our raw materials and have experienced specialists working for you in the selection and incoming goods process. Every single raw material is subject to strict quality controls to ensure that it meets the highest global standards. With this approach, we can guarantee that you will always receive high-quality products that you can rely on.
Insulating materials made of thermoplastics such as polyamide (PA) or polycarbonate (PC) are easy to process. Terminal blocks consisting of an insulating material such as polyamide or polycarbonate are used in almost every industry. They have high strength and rigidity, excellent impact strength and good abrasion and wear resistance.
| Polyamide (PA66) | Polyamide (PAGF) | Polycarbonate (PC) | |||
| Spec. Contact resistance according to IEC 60093 | Ω x cm | 10^12 | 10^12 | 10^16 | |
| Dielectric strength acc. to IEC 60243-1 | kV/mm | 25 | 30 | >30 | |
| Tracking resistance (A) acc. to IEC 60112 | CTI | 600 | 500 | >175 | |
| Upper max. permissible limit temperature | °C | 130 | 100 | 115 / 125 | |
| Lower max. permissible limit temperature (static) | °C | -60 | -50 | -50 | |
| Flammability acc. to UL 94 | V-0 | HB | V-2 / V-0 | ||
Insulating materials made of duroplasts such as gemin (KrG) and epoxy resin (EP), but also ceramics, exhibit increased dimensional stability. They are used in products for special industries with harsh environmental conditions and increased safety requirements. These include, for example, an increased continuous operating temperature, inherent flame protection, high fire resistance or also high chemical stability.
| Technical ceramics | Germin KrG | Epoxy resin (EP) | |||
| Spec. Contact resistance according to IEC 60093 | Ω x cm | - | 10^11 | 10^14 | |
| Dielectric strength acc. to IEC 60243-1 | kV/mm | >10 | 10 | 160 | |
| Tracking resistance (A) acc. to IEC 60112 | CTI | >600 | >600 | >600 | |
| Upper max. permissible limit temperature | °C | 250 | 130 | 160 | |
| Lower max. permissible limit temperature (static) | °C | -60 | -60 | -60 | |
| Flammability acc. to UL 94 | V-0 (5 V-B) | V-0 (5 V-A) | V-0 | ||
