Siemens UL 1066 User Manual

Name: Siemens UL 1066
Brand: Siemens
Rating: 4 (1 reviews)

334 pages

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Low Voltage Power Circuit Breaker

UL 1066 CIRCUIT BREAKER

DANGER

Hazardous voltage.

Will cause death, serious personal injury, or equipment damage.

Turn off and lock out all power supplying this device before working on this device.

3ZX1812-0WL00-1AN2923 99984 174

Operating Instructions Catalog No.: WLOPMAN1

Default Chapter3
- Table of Contents3
1 Overview6
- Circuit Breaker6
- Cradle7
2 Labels8
- Circuit Breaker Frame Type Label8
- Type Label Circuit Breaker Frame8
- Frame Designation9
- Trip Unit Designation9
- Rating Plug Label10
- Cradle Type Label10
3 Standard Specifications11
4 Packing and Lifting12
- Unpacking12
- Weights12
- Lifting with a Crane13
- Lifting with a Lifting Bar Assembly14
5 Installation17
- Mounting18
- Connecting the Main Conductors22
  - Application and Configuration of Fused Circuit Breakers24
- Secondary Wiring26
6 Commissioning32
- Preparation of Draw-Out Circuit Breaker32
- Charge the Closing Spring35
- Check List for Commissioning37
- Closing the Circuit Breaker38
- Opening the Circuit Breaker38
- Tripping39
- Reclosing a Circuit Breaker Tripped by the Trip Unit40
- Re-Commissioning after Fused Tripping (Not Applicable for 4-Pole)42
  - Measures42
  - Replacing the Fuses44
- Removing from Service49
- Troubleshooting50
7 Frame Sizes / Dimension Drawings52
- Frame Size II Drawout52
- Frame Size II Fused56
- Frame Size II, Fixed-Mounted Version59
- Frame Size II, Door Cut-Outs60
- Frame Size III, Fixed-Mounted Version61
- Frame Size III Drawout62
- Frame Size III, Fuse Carriage65
- Frame Size III, Door Cut-Outs67
- External Sensor for Neutral Conductor69
- Further Dimension Drawings71
8 Circuit Diagrams72
- Terminal Assignment72
- Auxiliary Switches73
- Signaling Switches74
- Shunt Trip, Undervoltage Trip / Electrical Closing Lockout75
- Closing Coil / Electrical CLOSE76
- Motor-Operated Mechanism77
- Remote Bell Alarm Reset77
- Trip Unit Circuitry for ETU745-77678
9 Electronic Components81
- Trip Units81
- Cubiclebus Modules134
- External Voltage Supply172
- Breaker Data Adapter173
- Handheld Test Device177
10 Reset the Reclosing Lockout and the Bell Alarm182
- Resetting the Bell Alarm182
- Resetting the Bell Alarm with Reclosing Lockout (Optional)183
- Field Installation of a Reclosing Lockout184
  - Removing the Automatic Reset Mechanism185
- Installing the Remote Bell Alarm Reset186
11 Shunt Trip / Closing Coil / Undervoltage Release189
- Overview189
- Installing Shunt Trips, Closing Coils, and Undervoltage Devices190
- Installing Optional Signaling Switches on Shunt Trips, Closing Coils, and Undervoltage Devices191
- Setting Delay Times on Undervoltage Release191
- Field Installation of a Cut-Off Switch for Shunt Trips and Closing Coils192
- Mechanical Function Test194
- Connecting Wires194
- Final Tasks195
- Electrical Function Test195
- Updating the Options Label197
12 Auxiliary and Control Switches198
- Installing Internal Auxiliary Switches S1 - S4199
- Installing the Ready-To-Close Switch S20200
- Trip Signaling Switches201
  - Trip Signaling Switches S13, S24, and S26202
- Control Switches - Connecting Wires203
- Communication Switches203
- Connecting Secondary Wiring203
- Updating the Options Label203
- Mechanism Operated Contacts (MOC)204
13 Motor-Operated Mechanism212
- Installing the Motor Operator212
- Optional Motor Disconnect Switch on the Front Panel214
- Updating the Options Label215
14 Indicators and Operating Elements216
- Limiting Access to OPEN/CLOSE Buttons216
- EMERGENCY OPEN Button218
- Operations Counter219
15 Locking Devices220
- Key Locks220
- Padlocking Provisions235
16 Sealing Covers243
17 Mechanical Interlocks244
- Field Installation of CLOSE / OPEN Buttons Blocking Device245
- Cubicle Door Interlock246
- Interlock to Prevent Racking with Cubicle Door Open249
- Coding between Circuit Breaker and Cradle250
18 Additional Options for the Cradle251
- Shutter251
  - Field Installation252
  - Catalog Numbers258
- Truck Operated Contacts - TOC (Cradle Accessory)259
19 Mechanical Circuit Breaker Interlocking262
- Configurations262
- Installing Interlocking Module269
20 Arc Chute Covers276
- Field Installation276
- Catalog Numbers278
21 Door Sealing Frame279
22 Plexiglas Breaker Cover281
23 Maintenance283
- Preparation for Maintenance284
  - Opening the Circuit Breaker and Discharging the Closing Spring284
  - Removing the Circuit Breaker from the Cradle285
- Changing Front Panel286
  - Removing Front Panel286
  - Reinstalling the Front Panel286
- Checking Arc Chutes287
- Inspection of Arc Chute Covers291
- Checking Contact Erosion292
- Replacing the Circuit Breaker Internal Contact Assemblies293
- Exchanging the Primary Disconnects310
- Cleaning and Greasing the Circuit Breaker314
24 Technical Data316
25 Abbreviations326
26 Glossary330
27 Index332

Questions and Answers:

M
Michael DavidJul 25, 2025
What to do if cubicle door cannot be opened (door interlock as accessory) of Siemens UL 1066?
- A
  Amanda CooperJul 26, 2025
  If the cubicle door (door interlock as accessory) cannot be opened, it might be because the closed Siemens circuit breaker is preventing it (open the circuit breaker). Another reason could be that the circuit breaker is in the connected position (rack the circuit breaker into the test or disconnected position).