Barcode:
109-236
HS Code:
85364900
Dossena DER3/0D Earth Differential Relay — 30 mA to 30 A adjustable, 2 DIN modules
The Dossena DER3/0D is a microprocessor-based earth-leakage protection relay for low-voltage industrial switchboards. Working with a separate toroidal current transducer, it measures residual current in true RMS and switches its output contact to trip the upstream breaker when the set threshold is exceeded. The wide adjustment range — 30 mA to 30 A, with a delay from instantaneous to 5 seconds — lets you build a genuinely selective earth-fault scheme instead of a single all-or-nothing trip level. Built to IEC 60947-2 Annex M ed. 8 for TT and TN networks up to 1000 V.
• IΔn adjustable 0.03–30 A; trip delay instantaneous to 5 s, continuously adjustable
• True RMS measurement with mains harmonic filtering — resists nuisance tripping
• Continuous self-monitoring of the toroid circuit, internal electronics and opening-coil wiring
• Compact 2-module DIN-rail housing; 1 × NO-C-NC 5 A 250 V a.c. output; manual or automatic reset
• Wide supply range 48–400 V a.c. (24–240 V d.c. version available); IP50 front / IP20 terminals
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Available from TONUS Group — Industrial MRO & Spare Parts supplier with IT Solutions expertise, serving companies in India, UAE, GCC and Worldwide.
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