173

Diversified Electronics

800.727.5646

atcdiversified.com

Phase Monitors

The ATC Diversified SLA Series is designed to protect 3-phase equipment

against PHASE LOSS, UNDER VOLTAGE, and PHASE REVERSAL conditions.

With normal operating voltages applied in the proper ABC sequence, the

internal relay will energize (PICK-UP). When incorrect phase sequence

or phase loss occurs or the three-phase voltages fall below the drop out

voltages, the relay will de-energize (DROP-OUT). On models featuring

indicators, the LED glows when all line conditions are normal.

Both Delta and Wye systems may be monitored. In Wye systems,

connections to neutral are NOT required.

For UL Listed units, with field wiring terminals, copper wire with 60°/75°C

rating must be used for control circuitry connections.

NOTE: When a phase is lost while the motor is running, a condition known

as regeneration occurs where a voltage is induced into the open phase

nearly equal in magnitude to the normal phase-to-phase voltage. However,

with the exception of lightly loaded motors, enough change is detected by

the SLA to provide the required protection when properly adjusted. The

SLA Series is UL Listed under file Number E55826.

DROP OUT

1 Ø Low

83% of Nominal

VOLTAGE

3 Ø Low

90% of Nominal

RESPONSE TIMES Models Up to 300 VAC

STYLE "A" & "E" Operate

250 mSEC

Release

0.5 SEC

Models Over 300 VAC

Operate

1.0 SEC

Release

2.0 SEC

RESPONSE TIMES

Operate

60 mSEC

STYLE "N"

Release

0.5 SEC

POWER

Style "A"

3 VA (approximately)

REQUIRED

Style "E"

Models up to 300 VAC: 3 VA (max.)

Models over 300 VAC: 7 VA (max.)

Models up to 500 VAC: 3 VA (max.)

Style "N"

3 VA (max.)

OPERATING

See Ordering Information

VOLTAGE

RESET

Automatic (Manual Optional)

INDICATOR LED

Glows when all conditions are Normal

(On Applicable Models)

OUTPUT

SPDT (Style "A" and "N")

RATING

DPDT (Style "E")

PHASE SEQUENCE ABC (Will not Operate CBA)

TEMPERATURE

Operate

32 to +131 F (0 to +55C)

RATING

Storage

-49 to 185 F (-45 to +85 C)

U.S. PATENT

3,611,050

NUMBER

WEIGHT

Style “A”

NET:2.24 oz Shipping: 2.56 oz

Style “N”

NET:4.8 oz Shipping: 5.76 oz.

Style “E”

NET:5.3 oz Shipping: 5.6 oz

SPECIFICATIONS

IND. CONT. EQ.

496Y

MODEL NUMBER

MODEL NUMBER

SLA

A

OPERATING VOLTAGE

See Ordering Information

XXX

TYPE OF OPERATION

Fixed

F

Lock Shaft Adjusted

L

Screwdriver Adjusted

S

ENCLOSURE STYLE

Octal Plug-In Dust Cover

A

Blad Plug-In, Dust Cover

B

Surface Mounted, #8 Screw Terminals

E

Surface Mounted, 1/4" Quick Disconnect Terminals

N

OPTIONS

Add R Suffix when manual reset is required,

R

(Available only in Style "E" Enclosure)

Plug-In models are UL Listed only when used with

U

RB-08 socket.

• Available up to 480 VAC

(625 VAC with "E" style)

• Delta or Wye Systems

• Fixed, Lock Shaft, or Screwdriver

Adjustments

• Several Enclosure Styles

TYPICAL APPLICATIONS

• Air Handlers

• Computer Power Protection

• Conveyor Drive

• Water Waste & Sewage Machinery

• Oil & Gas Pumps

• Sawmill & Woodpump Machinery

• Power Substation

• Automatic Transfer Switching for

Monitoring Emergency Power

Supplies

PROTECTS 3-PHASE EQUIPMENT

AGAINST:

• Phase Loss

• Under Voltage

• Phase Reversal

• Irrigation Pumps

• Lift Station Pumps

• Robotics Equipment

• Elevator Drives

• Commercial/Industrial Air

Conditioning & Refrigeration

Compressors

Style "A"

Style "N"

Style "E"