Binder introduces K- and L-coded panel mount parts qualified for North America

Power supply components intended for control cabinets in North American must meet the specifications of the UL 2237 standard. To meet this requirement, binder has designed panel mount parts with K and L coding as part of the M12 series 824 and 823. 

The K- and L-coded panel mount parts are offered by binder within its 824 / 823 product series, which are intended for power applications in the North American market. The series includes five-pin male and female panel mount parts featuring screw locking that meet the protection degree criteria of IP68. The M12 components are intended for use in industrial controls, electrical and plant engineering.

UL 2237 relating to the use of electromechanical interfaces for voltage and power transmission in control cabinets specifies testing guidelines for connectors, cables, cable glands, and fuse elements, such as the grounding (bonding) path current test, which stipulates the PE (protection earth) path to withstand a current of 190A for the wire gauge AWG16 or 300A in the case of AWG14 for four seconds without interrupting. AC applications also require an abnormal overload test to be carried out at 1.5 times the rated current – where the PE path fuse must not blow. There is also the requirement for an additional connection of the PE pin to the component housing.

According to the DIN EN 61076-2-111 standard, K coding indicates five-pin M12 connectors for power supply to AC applications such as drives or frequency converters. The rated voltage and current limits are specified at 630V AC and 12A, respectively. The L coding also refers to a five-pole mating face but is particularly designed for DC applications up to 63V DC and 16A. These include, for example, smaller motors or fieldbus devices in the industrial automation sector.

The five-pin panel mount parts of the binder 824 and 823 series with K coding (pin count 4+PE) and with L coding (pin count 4+FE, functional earth) feature M12 screw locking. The termination types are single wires. 

Both the K- and L-coded components were designed for wire gauges AWG16 and AWG14. For the AC components with K coding, the requirements of UL 2237 were implemented via a PE connection to the threaded ring. UL 2237 approval is currently being prepared.

The mechanical lifespan of the panel mount parts is rated at more than 100 mating cycles. The temperature limits are -40 to +85 degrees C (Series 824) and -40 to +105 degrees C (Series 823).

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