1 normally open contact, potential-free 16A/250V AC with tungsten pre-contact, max. inrush current 500A/2ms. 230V LED lamps up to 600W, incandescent lamps 3300W. No standby loss. Modular device for mounting on DIN-EN 60715 TH35 mounting rail. 1 division unit = 18mm wide, 58mm deep. State-of-the-art hybrid technology combines the advantages of wear-free electronic control with the high performance of special relays. With the patented Eltako Duplex technology (DX), the normally potential-free contacts can still switch at zero crossing when switching 230V AC 50 Hz, thereby drastically reducing wear. To do this, simply connect the N conductor to terminal (N) and L to 1(L). This results in a standby loss of just 0.1 watts. If the contact is used to control switching devices which do not themselves switch at zero crossing, (N) should not be connected, as the additional closing delay would otherwise have the opposite effect. Universal control voltage 8..230V UC. Low switching noise. Control display with LED. By using a bistable relay, there is no coil power loss and no heating as a result, even when switched on. The relay contact can be open or closed when commissioned and synchronizes when first activated. This relay is not suitable for feedback with the switching voltage of a dimmer switch. Only use the ESR12DDX-UC, ESR12NP-230V+UC or ESR61NP-230V+UC relays for this. The electronics do not have their own power supply and therefore no standby loss. The microcontroller is only activated when the control contact is closed, which switches the bistable relay in the correct direction. When the control contact opens or the control voltage drops, the relay switches back.