Schneider Harmony Relays
3‐phase supply control relays
Rated Supply
Contacts
Voltage
Part Number SERM17TG00 SERM17TG20
Operating Principle
* Correct sequencing of phases L1, L2, and L3
1 CO 5 A 208...480V AC 2 CO 5 A 208...480V AC
* Fault signaling by LEDs
* Total loss of two or more of the phases
Multifunction 3‐phase control relays
Rated Supply
Contacts
Voltage
Part Number
Operating Principle
SERMNF22TB30 * Pairing Indication LED
2 CO 8 A 208...480V AC
* Phase Loss (PL) fault indication LED (Red continuous) or Phase Sequence (PS) fault indication LED (Red blinking) * Undervoltage (UV) fault indication LED (Red continuous) or Overvoltage (OV) fault indication LED (Red blinking) * Asymmetry (Asym) fault indication LED (Red continuous) * Under‐frequency (UF) fault indication LED (Red continuous) or Over‐frequency (OF)
fault indication LED (Red blinking) * Output 2 indication LED (Amber) * Output 1 indication LED (Amber) * Power Supply indication LED (Green) * NFC antenna location * Product being powered by L1 and L3 * Correct sequencing of phases L1, L2, and L3 * LED indication for relay output status and
SERM22TR31
2 CO 8 A 208...480V AC
RM22TR33
2 CO 8 A 380...480V AC
fault detection (except phase disconnection) * Phase loss, including in the case of voltage regeneration * Undervoltage from 2…20% of the supply voltage Un * Overvoltage from 2…20% of the supply voltage Un
SERM17TA00
* Correct sequence of the three phases
1 CO 5 A 208...480V AC
* Phase loss of at least one of the three phases (U measured < 150 V) * Asymmetry adjustable from 5…15% of Un
SERM17TU00
* Correct sequence of the three phases
1 CO 5 A 208...480V AC
* Phase loss of at least one of the three phases (U measured < 150 V) * Undervoltage adjustable from ‐ 2…‐ 20% of Un (‐ 2… ‐ 12% in the range 3 x 208 V a and ‐ 2%…‐ 17% in the range 3 x 220 V a due to the minimum voltage 183 V a)
SERM17TE00
* Correct sequence of the three phases
1 CO 5 A 208...480V AC
* Phase loss of at least one of the three phases (U measured < 150 V) * Asymmetry adjustable from 5…15% of Un * The overvoltage and undervoltage difference in window mode, adjustable from 2…20% of Un _________________________________________ www.remtron.com.au Page 37 of 129 shop.remtron.com.au
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