Earth Leakage Protection & Measurement Transformers for Low Voltage.
- To be used with ELR-B, ELR-3C, D30 and DM30 relays.
- The transformer and relay assembly sensitivity is fixed by the relay.
- The toroidal transformer CTD-1/28 is specifically designed for DIN rail mounting.
| Type | Code | Core | Inner ø | Weight(kg.) |
| CTD – 1/28 | 41055 | – | 28 mm | 0,2 |
| CT-1 / 35 | 41060 | Closed | 35mm | 0,2 |
| CT-1 / 60 | 41065 | Closed | 60mm | 0,3 |
| CT-1 / 80 | 41070 | Closed | 80mm | 0,5 |
| CT-1 / 110 | 41075 | Closed | 110mm | 0,5 |
| CT-1 / 160 | 41080 | Closed | 160mm | 1,4 |
| CT-1 / 210 | 41085 | Closed | 210mm | 1,5 |
| CT-1 / 350 | 41090 | Closed | 350mm | 4,8 |
| CT-1 / 400 | 41092 | Closed | 270mm | 8,3 |
| CTA-1 / 60 | 41066 | Open | 60 mm | 0,3 |
| CTA-1 / 110 | 41076 | Open | 110mm | 0,5 |
| CTA-1 / 160 | 41081 | Open | 160mm | 1,4 |
| CTA-1 / 210 | 41086 | Open | 210mm | 1,5 |
