800.727.5646
atcdiversified.com
Diversified Electronics
SLA Series
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, connec-
tions 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 pro-
vide the required protection when properly adjusted.
STYLE “A”
STYLE “N”
STYLE “E”
\\\
SPECIFICATIONS
DROP-OUT
VOLTAGE
1 Ø Low
3 Ø Low
Operate
Release
83% of Nominal
90% of Nominal
250 mSEC
0.5 SEC
1.0 SEC
2.0 SEC
60 mSEC
0.5 SEC
• Available up to 480 VAC
• Delta or Wye Systems
• Fixed, Lock Shaft, or
Screwdriver Adjustment
• Several Enclosure Styles
TYPICAL APPLICATIONS:
• Air Handlers
• Computer Power Protection
• Conveyor Drive
• Water Waste & Sewage
Machinery
• Oil & Gas Pumps
• Sawmill & Woodpump
Machinery
• Power Substation
Pha
se
Monitors
Models Up to 300 VAC
PROTECTS 3-PHASE
EQUIPMENT AGAINST:
• Phase Loss
• Under Voltage
• Phase Reversal
RESPONSE TIMES
STYLE “A” & “E”
Models Over 300 VAC
Operate
Release
RESPONSE TIMES
STYLE “N”
Operate
Release
• Automatic Transfer Switching
for Monitoring Emergency
Power Supplies
• Irrigation Pumps
• Lift Station Pumps
• Robotics Equipment
• Elevator Drives
• Commercial/Industrial Air
Conditioning & Refrigeration
Compressors
Style “A” 3 VA (approx.)
POWER
REQUIRED
Style “E”
Models up to 300 VAC:
3 VA (max.)
Models over 300 VAC:
7 VA (max.)
Models over 500 VAC:
3 VA (max.)
Style “N” 3 VA (max.)
OPERATING
VOLTAGE
RESET
INDICATOR LED
OUTPUT RATING
PHASE
SEQUENCE
TEMPERATURE
RATING
U.S. PATENT
NUMBER
WEIGHT
See Ordering Information
Automatic (Manual Optional)
Glows when all conditions are Normal
(On Applicable Models)
SPDT (style “A” and “N”)
DPDT (style “E”)
ABC (Will Not Operate CBA)
Operate
Storage
3,611,050
Style “A” NET: 2.24 oz Shipping: 2.56 oz
Style “E” NET: 4.8 oz Shipping: 5.76 oz
Style “N” NET: 5.3 oz Shipping: 5.6 oz
32° to +131°F (0° to +55°C)
-49° to 185°F (-45° to +85°C)
MODEL NUMBER
> > > > > >
SLA
A
Operating Voltage
See Ordering Information
Type of Operation
Fixed
Lock Shaft Adjusted
Screwdriver Adjusted
Enclosure
F
L
S
Style
Octal Plug-In, Dust Cover A
Blade 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 relay socket.
215
Phase Voltage Monitors
// SLA Series
800.727.5646
atcdiversified.com
Diversified Electronics
SLA Series
\\\
ORDERING
MODEL
NUMBER
SLA-120-ALA
SLA-120-ASA
SLA-120-ASB
SLA-230-ALA
SLA-230-ASA
SLA-230-ASB
SLA-380-ASA
SLA-440-ASA
SUA-120-ALA
INFORMATION
STYLE A PLUG-IN
DROP-OUT VOLTAGE
1 Ø LOW
3 Ø LOW
AGENCY
APPROVAL
—
79-108
Screwdriver
Lock Shaft
85-117
OPERATING
TYPE OF
VOLTAGE ADJUSTMENT
Lock Shaft
95-130 Adj
190-270 Adj.
Screwdriver
350-440 Adj.
430-480 Adj.
95-130 Adj.
158-224
171-243
OUTPUT RATINGS
DPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC. Figure 2
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 3
DPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 2
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 3
SPDT, 360 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
290-365
357-398
79-108
Lock Shaft
315-396
387-432
85-117
—
SUA-120-ALAU*
SUA-230-ALA
190-270 Adj.
SUA-230-ALAU*
SUA-380-ASA
SUA-440-ASA
350-440 Adj.
Screwdriver
430-480 Adj.
290-365
357-398
315-396
387-432
158-224
171-243
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
SPDT, 360 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
*UL Listed only when used with RB-08 relay socket; 5 Amps Resistive @ 240 VAC. All voltages referenced on this page are phase-to-phase.
Models also available with fixed operating voltages. Consult factory.
STYLE E SURFACE MOUNTED ENCLOSURE
MODEL
NUMBER
SLA-120-ALE
95-130 Adj.
SLA-120-ALER
SLA-230-ALE
190-270 Adj.
SLA-230-ALER
SLA-380-ALE
350-440 Adj.
SLA-380-ALER
SLA-440-ALE
430-480 Adj.
SLA-440-ALER
SLA-575-ALE
525-625 Adj.
436-519
473-563
357-398
387-432
Manual
Automatic
290-365
315-396
Manual
Automatic
158-224
171-243
Manual
Automatic
79-108
85-117
Manual
Automatic
OPERATING
VOLTAGE
DROP-OUT VOLTAGE
1 Ø LOW
3 Ø LOW
RESET
Automatic
AGENCY
APPROVAL
OUTPUT RATINGS
DPDT, 211 VA Inductive; 10 Amps
Resistive @ 120 VAC. Figure 4
DPDT, 211 VA Inductive; 10 Amps
Resistive @ 120 VAC. Figure 4
DPDT, 345 VA Inductive; 5 Amps
Resistive @ 240 VAC. Figure 4
DPDT, 345 VA Inductive; 5 Amps
Resistive @ 240 VAC. Figure 4
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
SPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 5
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
SPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 5
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
All voltage referenced are phase-to-phase.—Models also available with fixed operating voltages. Consult factory.
STYLE N EPOXY ENCAPSULATED
MODEL
NUMBER
SLA-120-AFN
SLA-208-AFN
SLA-220-AFN
SLA-240-AFN
OPERATING
VOLTAGE
TYPE OF OPERATION
DROP-OUT VOLTAGE
1 Ø LOW
3 Ø LOW
AGENCY
APPROVAL
120
208
220
240
Fixed
Fixed
Fixed
Fixed
100
173
183
199
108
187
198
216
All voltage referenced are phase-to-phase.
217
Phase Voltage Monitors
// SLA Series
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