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  • Series
    KIT ATCONTROL/R
  • Model
    AT-8756
  • Brand / Made in
    AT / SPAIN
  • Nominal current: 20 A
  • Type of line: Single-phase
  • Nominal voltage (L-N) Un: 230 V
  • Maximum overvoltage (L-N) Uc: 400 V
  • Working characteristics for overvoltages: 275 V (3-5 s), 400 V (0,1-0,2 s)
  • Test type according to UNE-EN61643-11: Type 2
  • Maximum discharge current (8/20 µs wave) lmax: 15 kA
  • Protection level at In (1,2/50 µs wave) Up: 1.1 kV

KIT ATCONTROL/R - Kit protector against permanent (and transient) overvoltages, with self-reclosing and contactor

KIT ATCONTROL/R protectors cut off the power supply when they detect a permanent overvoltage or undervoltage, (for example, a fault in the neutral), thus protecting the equipment installed downstream.

Self-reclosing protector: when the permanent overvoltage comes to a halt, the protector reconnects the contactor.

Moreover, they also actuate when they detect a transient overvoltage, driving the current to earth and reducing the voltage to a level that does not damage the connected equipment. Tested and certified as protector Type 2 in official and independent laboratories according to standard EN IEC 61643-11.

It has a test button to check that installation has been executed correctly.

KIT ATCONTROL/R PT-M 20 - Kit with Single-phase protector against permanent and transient overvoltages, with self-reclosing and 20A contactor. Actuating time 275V→3-5s / 400V→0,1-0,2s. Imax=15kA. Up = 1.1kV.

Name: KIT ATCONTROL/R PT-M 20

Reference: AT-8756

DIMENSIONS
  • Protector dimensions: 36 x 90 x 80 mm - 2 DIN modules (DIN 43880)
  • Contactor dimensions: 18 x 81 x 65 mm - 1 DIN modules (DIN 43880)
ELECTRICALS
  • Nominal current: 20 A
  • Type of line: Single-phase
  • Nominal voltage (L-N) Un: 230 V
  • Maximum overvoltage (L-N) Uc: 400 V
  • Actuation voltage V1 (L-N) Ua: 275 V
  • Actuation time at V1: 3-5 s
  • Actuation voltage V2 (L-N): 400 V
  • Actuation time (V2): 0,1-0,2 s

Protection against transient overvoltages

  • Test type according to UNE-EN61643-11: Type 2
  • Protection categories according to the REBT: I, II, III, IV
  • Nominal discharge current (8/20 µs wave) ln: 5 kA
  • Maximum discharge current (8/20 µs wave) lmax: 15 kA
  • Protection level at In (1,2/50 µs wave) Up: 1.1 kV
CONSTRUCTION
  • Type of connection: Parallel (one port)
  • Fixing: DIN Rail
  • Enclosure material: Polyamide
  • Insulation resistance: > 10^14 Ω
  • Self-extinguishing enclosure: V-0 Type according to UNE-EN IEC 60707 (UL94)
  • Nr. of poles: 2
  • Warning for permanent overvoltages: Warning light. Green light: correct mains voltage. Red: overvoltage
  • Warning for transient overvoltages: Warning mechanism. Yellow: protector status ok. Black: Replace
ENVIRONMENTAL
  • Working temperature: -40 to +70 °C
  • Protector location: Indoor
  • Enclosure protection: IP20
CONNECTION
  • Protector cables:
            + Min/Max section: 2.5 / 35 mm2
            + Screw: Philips, H2
            + Tightening: 3 N·m
  • Activation cables (S1, S2):

            + Min/Max section: 1 / 1.5 mm2
            + Screw: DIN 5264, M 2
            + Tightening: 0.25 N·m

  • Cables of contactor:

            + Min/Max section: 1 / 16 mm2
            + Screw: Philips, H2
            + Tightening: 2 N·m

TESTS AND CERTIFICATIONS

  • Certificated tests according to the standard: UNE-EN IEC 61643-11
  • UNE-EN 50550 (POP)
  • Relevant standards: UNE 21186, UNE-EN IEC 62305
  • Products compliant with EC requirements.
INSTALLATION
  • They must be installed in parallel with the low voltage supply line, downstream from the circuit breaker.
  • The contactor should be installed in series with the low voltage supply line, downstream from the protector.
  • Connect the S1 and S2 terminals to the contactor, always without voltage.
SAFETY AND MAINTENANCE
  • Installation should be carried out without power in the line and can only be done by authorized professionals.
  • Connection to earth is a must.

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