Technical Specifications
The document provides technical specifications for the CONTAX 3221 S0 and CONTAX D 3221 S0, which are 2-module static single-phase power meters. The reference voltage is 230 Vac with a frequency range of 50-60 Hz. The meters operate within a voltage range of -20% to +15% of the reference voltage and have a nominal frequency of 50-60 Hz. The power consumption for current circuits is 0.5 W (7.5 VA) and for voltage circuits is 0.2 W (resistive SHUNT type).

Features
The meters feature an analog or digital display with 5 digits plus 1 decimal, which is non-resettable. They include a consumption LED indicator and an opto-isolated pulse electric output S0. The meters are designed for direct measurement with a current range of 5 (32) A.

Environmental and Mechanical Specifications
The operating temperature range is -20°C to +50°C, with a storage temperature range of -25°C to +70°C. The relative humidity is specified as an annual mean of less than 75% with peak values up to 95%. The protection class is Class II under correct mounting conditions, with an IP 20 degree of protection according to EN 60529.

Connections and Dimensions
The meters use direct connection through screw terminals, with a wire cross-section range of 1-3 mm². The net weight and dimensions are specified, and the meters are designed to fit in a 2-module surface box.

Compliance and Standards
The meters comply with directives 2014/30/EU (EMC), 2014/35/EU (LVD), and 2011/65/CE (RoHS). They adhere to standards EN 61010-1:2010, EN 62052-11:2003, and EN 62053-21:2003.

Accessories and Additional Information
Accessories include a pulse collector with RS485 ASCII and RF outputs, and a 2-module surface box. Additional information and a free version of the software are available at ORBIS.ES.