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5/172 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
E 236 undervoltage monitoring relays

Devices for panel installation onto mounting rails (35 mm) according to DIN EN 60715
mounting depth: 68 mm
mounting width: 17.5 mm = 1 module
5
color: gray, RAL 7035
Application - devices with 1CO contact
For three-phase undervoltage monitoring (each phase connected to a neutral conductor)
of switchgear. Devices with fixed threshold value (US 1.x and US 1.1 D) also for installations
according to
DIN VDE 0100-718 (for medical purposes) and DIN VDE 0108-100 (power installations and
E 236-US 1.1 safety supply in installations for gathering of people).
US 1.1: 3 phases to neutral conductor with fixed threshold value at 195 V; hysteresis fixed
at 5 %
US 2.1: 3 phases to neutral conductor with threshold value range of 160 – 240 V; hysteresis
fixed at 5 %
US 1.1D: 3 phases to neutral conductor with fixed threshold value at 195 V; hysteresis fixed
at 5 %, but with switch-on delay of 0.1 (6 sec.) to 10 min

Undervoltage monitoring device with pick-up delay E 236-US 1.1D
If the measurement of the voltage of all phases connected exceeds the switching threshold
U , including the hysteresis, the time delay (t) starts to run and the (green LED U/t) flashes.
s
Upon expiry of the time delay (t), the output relay R picks up (yellow LED on, green LED U/t
flashes). If the measured voltage of one of the connected phases falls below the switching
threshold U , the output relay de-energizes (yellow LED is off, green LED U/t is off).
E 236-US 2.1 s
Contact Bbn Order details Price Weight Pack
4016779 1 1 piece unit
piece
EAN Type code Order code kg pc.
1 two-way switch 651776 E 236-US 1.1 2CDE165001R2001 0.05 10
1 two-way switch 651783 E 236-US 2.1 2CDE165011R2001 0.05 10
1 two-way switch 651790 E 236-US 1.1D 2CDE165001R2011 0.05 10

E 236-US 1.1D