A40
The A40 is part of the Mersen (formerly Ferraz Shawmut) meters line, distributed by Gross Automation.

The DIRIS A40 model provides measurement of RMS values for 3 phase current plus neutral, phase to phase and phase to neutral voltage, frequency, total and per phase active, reactive and apparent power, total and per phase power factor as well providing average and maximum values of current, phase to phase and phase to neutral voltage and frequency, and total active and reactive and apparent power.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: Voltage inputs 50 to 500VAC Current inputs 5 to 10000 A; Auxiliary power supply 120 to 350VDC (120-250VDC UL approved); AC: Auxiliary power supply 120 to 350VDC (120-250VDC UL approved); UL Listed; CSA Certified; Switchboards and other applications requiring energy metering and management. |
| Features | Pushbuttons provide for easier operation and allows for quick access to all data; Backlit screen provides superior visibility in all lighting conditions; ASIC chip ensures superior accuracy; Plug and play modules allow users to purchase only functions they need; Compact 96 sq. mm. design with retaining clips allows for quick installation; Self diagnositc menu helps identify and automatically fix incorrect connections |
Features
- Pushbuttons provide for easier operation and allows for quick access to all data
- Backlit screen provides superior visibility in all lighting conditions
- ASIC chip ensures superior accuracy
- Plug and play modules allow users to purchase only functions they need
- Compact 96 sq. mm. design with retaining clips allows for quick installation
- Self diagnositc menu helps identify and automatically fix incorrect connections
Ratings
- AC: Voltage inputs 50 to 500VAC Current inputs 5 to 10000 A
- Auxiliary power supply 120 to 350VDC (120-250VDC UL approved)
- AC: Auxiliary power supply 120 to 350VDC (120-250VDC UL approved)
- UL Listed
- CSA Certified
- Switchboards and other applications requiring energy metering and management.
Catalog Numbers
Select a DIRIS®
| Auxiliary Power Supply Us | Catalog Number |
|---|---|
| 110 … 400 VAC / 120 … 350 VDC (Product Limits); 110 … 240 VAC / 120 … 250 VDC (UL Approved) | 4825 0A40+ |
Optional functions - Select a module
| Description | Catalog Number |
|---|---|
| Pulse output — 2 configurable outputs impulses (type, weight and duration) for +/- kWh, +/- kvarh and KVAh | 4825 0090+ |
| Pulse output + harmonics — 2 configurable outputs impulses (type, weight and duration) for +/- kWh, +/- kvarh and KVAh; Harmonic analysis by row up to 25 and by phase for 3I, In, 3V and 3U | 4825 0091+ |
| Communication: RS 485 JBUS/MODBUS — RS 485 link with JBUS/MODBUS protocol (speed up to 38 400 bauds) | 4825 0092+ |
| Analog outputs — 2 configurable outputs on 3I, In, 3V, 3U, F, +/-ΣP, +/-ΣQ, ΣS and ΣPFL/C; 2 modules may be installed, for 4 analog outputs max | 4825 0093+ |
| 2 inputs – 2 outputs — 2 to 6 outputs for monitoring 3I, In, 3V, 3U, F, +/-ΣP, +/-ΣQ, ΣS and ΣPFL/C, THD 3I, THD In, THD 3V, THD 3U and hours run or remove control | 4825 0094+ |
| Communication PROFIBUS®DP — 1 module RS 485 and 1 module protocol PROFIBUS®DP (speed up to 1.5 Mbauds) | 4825 0096+ |
| Memory — Storing P+, P-, Q+, Q- values with internal/external synchronisation signal (5, 8, 10, 15, 20 and 30 minutes during 31 and 62 days); Storing last 10 time-stamped alarms; Storing min/max instantaneous values for 3I, In, 3V, 3U, F, +/-ΣP, +/-ΣQ, ΣS, THD 3U, THD 3V, THD 3I, THDIn; Storing last 10 time-stamped voltage dips, surges and outage (EN 50 160); Storing average values according to synchronisation signal for 3U, 3V and F | 4825 0097+ |