21WL Circuit Breaker Selection and Application Guide
Breaker display adapter (BDA)
The BDA can be used to read or modify the breaker ETU and 
Cubiclebus parameters using a laptop, pocket PC or remote 
desktop PC. Circuit breakers can be parameterized individually  
using one BDA with similar or different parameters. No software 
is required as the embedded software interface is through a PC 
browser. Connectivity to a PC or network can be serial (RS232) or 
Ethernet (TCI/IP) addressed. If the breaker ETU is energized with 
24VDC control power the BDA can be powered through the  
interconnecting ribbon cable. Order part number WLBDAP
WL Circuit Breaker
Accessories
Handheld test device
To test the WL breakers ETU trip functions we offer a hand-held 
tester that checks:
•  Sensor continuity
•  Long-time function
•  Short-time function
•  Instantaneous function
•  Neutral and ground fault function
During a test, the device will electrically trip the circuit breaker 
performing a full function test of the ETU and the trip actuator. 
Cables for 120VAC power supply and ETU connection is included 
with the tester. Order part number WLTS
Communication power supplies
For WL devices that require a 24VDC input we offer the Siemens 
SITOP power supply. The SITOP power supply is a class 2 rated 
devices suitable for supporting loads of 2.5 or 3.8 amps. DIN rail 
mounting provision and compression wire connections included.
For loads of 2.5A maximum order part number WLSITOP25 or 
WLSITOP1 for 3.8A maximum loads.
Mechanical breaker interlocks
Mechanical interlock options are available for fixed or draw-out 
breakers. Interlocking is managed through cable connections 
between two or three breakers less than 6 meters apart. Lock 
kit includes 2.0 meter interlocking cable and mechanism for 
mounting to a single breaker.
For fixed breaker frame size 1 order part number WLNTLKF1
For fixed breaker frame size 2 or 3, 
order part number WLNTLKF23
For draw-out breaker frame size 1, 2, or 3,
order part number WLNTLK
 
For alternate cable lengths, order part number
  3.0 meter   WLNTLWRE3
 4.5 meter   WLNTLWRE4
   6.0 meter   WLNTLWRE5
Courtesy of NationalSwitchgear.com