sprecher schuh L11 Series Disconnect Switches Owner’s Manual

schuh L11 Series Disconnect Switches
Owner’s Manual Series L11 Disconnect Switches
30A to 1200A

L11 Series Disconnect Switches

The L11 disconnect series ranges from 30A through 1200A. The L11 Fusible switches are available from 30A up to 800A. The L11 Non-Fusible switches are available from 30A up to 1200A. Optional auxiliary contacts can also be mounted  on the switch for control circuit use. The L11 family performance comes in a compact design, leaving room for additional branch circuit components within the panel.
Maximum protection for downstream equipment
L11 switches are UL98 approved as a branch circuit protection device and engineered to provide excellent short-circuit protection for downstream equipment up to 200kA. The L11 fusible switches accept the latest small dimension Class  CC, J, L and HRCII fuses.
Type 2 protection limits let-through currents to levels specified for IEC equipment, and ensures that when the short circuit is cleared, the device will be operable.
Meets the toughest safety standards
The smaller L11 models offer a modular universal internal handle which provides an interlocked handle for test mode use and UL508A and NFPA 79 compliance in North America. The L11 switches meet IP20 for fingersafe wiring terminals and IP30 for touch-safe fuse carriers.

Big performance in a small package

L11 disconnects are rated up to 1200A and can be operated at up to 600V. They protect motors up to 500HP (@480V). The L11 may be installed on circuits capable of delivering up to 200,000A of short circuit fault current levels typically  found in modern industrial facilities.
The L11 30A & 60A fusible switches incorporate removable fuse carriers with an optional neon blown fuse indicator carrier. This range of switches and handles also features a Test mode for circuit testing via D7 contact blocks. The 30A and 60A switches can be conveniently DIN-rail mounted or screw mount.

International standards and approvals

All Sprecher + Schuh L11 disconnect switches are UL Listed under File Number E47426, CSA, CE Marked and are designed to meet IEC 947-3, and applicable NEMA requirements.

Versatile Range of Accessories

All L11 Disconnects include a wide range of interchangeable accessories, reducing inventory and increasing flexibility.

Sprecher + Schuh’s L11 series of fused and non-fused disconnect switches comply with service entrance requirements. This family of rod operated switches is suitable for applications that require small panel space and superior short circuit protection.

Choose L11 When the Application Requires

• UL 98 main panel disconnecting means
• UL 98 service entrance disconnecting means
• UL 508 at-motor disconnecting means
• NEMA KS-1 rated disconnecting means but in a smaller, more modular design than traditional NEMA disconnects
• IEC 60947-3 switch disconnector

Fusible – 30 to 800 Amps
NFPA 79 Compliant
L11 30A…800A Fusible switches are NFPA79 compliant, which meets the guidelines under the NFPA 79 standards 5.3.3.1 and 6.2.3.1.2.
NFPA 79 Internal Handle

• Provides a means to operate the disconnect switch without the use of accessory tools or devices (independent of door position)
• Patented interlock requires deliberate action to operate switch (while enclosure door is open)
• NFPA 79 and UL 508A compliant
• Integrated handle with tube shaft guard is compact and easily installed

Modular Accessories

• Removable fuse carriers provide dead-front switch during fuse change out
• IP20 finger safe wiring terminals
• Snap on D7 Contacts
• Modular global fuse carriers for Class J, Class L, HRCI-J and HRCII-C

Double Knifeblade Contact Design

• Provides reliability, isolation, and welded contact recovery
• Silver-plated contacts to optimize current conduction

Comprehensive Accessories & Approvals

• Complete range of handles and operating shafts
• Conform to UL 98 standards
• UL Listed, CSA

Non-Fusible – 30 to 1200 Amps
NFPA 79 Compliant
L11 30A and 60A Non-Fusible switches offer all the same NFPA 79 Compliance and Handle options as their Fusible counterparts.
Convenient Auxiliary Control

• L11 30A and 60 amp units use snap on D7 auxiliary contacts
• L11 100 to 1200 amp units use Micro snap on auxiliary contacts

Complete Compatibility

• Non-Fused switches share most of the same accessories, handles, lugs, terminals, and locking mechanisms as the Fusible, making inventory control simple and easy.
• Both Fusible and Non-Fusible disconnects are available in several types of enclosures

Amp Rating (A)| Maximum Horsepower| No. of Poles| Catalog Number
---|---|---|---
1 Ø (60Hz)| Three Phase (60Hz)| DC
120V| 240V| 240V| 480V| 600V| 125V| 250V
UL Class CC and CSA HRCI-Misc Fuses
30| 2| 3| 7.5| 15| 20| 3| 5| 3 ✪| L11-C30-1753
UL Class J and CSA HRCI-J Fuses
30| 2| 3| 7.5| 15| 20| 3| 5| 3 ✪| L11-J30-1753
60| 3| 10| 15| 30| 50| 5| 10| 3 ✪| L11-J60-1753
100| 7.5| 15| 30| 60| 75| 7.5| 20| 3| L11-J100-1753
200| ~| 25| 60| 125| 150| 15| 40| 3| L11-J200-1753
400| ~| 50| 125| 250| 350| 20| 50| 3| L11-J400-1753
600| ~| ~| 200| 400| 500| ~| ~| 3| L11-J600-1753
UL Class L and CSA HRCII-L Fuses
800| ~| ~| 200| 500| 500| ~| ~| 3| L11-L800-1753
CSA HRCII-C Fuses
30| 2| 3| 7.5| 15| 20| 3| 5| 3 ✪| L11-H30-1753
60| 3| 10| 15| 30| 50| 5| 10| 3 ✪| L11-H60-1753
UL and CSA Non-Fused
30| 2| 3| 7.5| 15| 20| 3| 5| 3| L11-N30-1753
60| 3| 10| 15| 30| 40| 5| 10| 3| L11-N60-1753
100| 7.5| 15| 30| 75| 100| 10| 15| 3| L11-NU100-1753
200| ~| 50| 75| 150| 200| 15| 15| 3| L11-NU200-1753
400| ~| ~| 125| 250| 350| 20| 50| 3| L11-NU400-1753
600| ~| ~| 200| 400| 350| 20| 50| 3| L11-NU600-1753
800| ~| ~| 200| 500| 500| ~| ~| 3| L11-NU800-1753
1200| ~| ~| 200| 500| 500| ~| ~| 3| L11-NU1200-1753

✪ Optional 4th Pole module accessory available

L11 Disconnect Features

| Fusible Disconnect Switches| Non-Fusible Disconnect Switches
---|---|---
L11-C30, J30, J60| L11-J100, J200, J400| L11- J600| L11- L800| L11-N30, N60| L11- NU100, NU200, NU400| L11- NU600, NU800, NU1000| L11- NU1200
Fuse Type Class| CC or J| J| J| L|
Blown Fuse Indication ➊| ✓| ~| ~| ~|
DIN-Rail Mountable| ✓| ~| ~| ~| ✓| ~| ~| ~
Multi-Tap Terminal Lug ➋| ✓| ~| ~| ~| ✓| ~| ~| ~
4th Power Pole Module Adder ➋| ✓| ~| ~| ~| ✓| ~| ~| ~
NFPA79 Compliant Handle Kits ➋| ✓| ✓| ✓| ✓| ✓| ~| ~| ~
Auxiliary Contacts, D7 Pilot Device type ➋| ✓| ✓| ✓| ✓| ✓| ~| ~| ~
Auxiliary Contacts, Micro Type ➋| ~| ~| ~| ~| ~| ✓| ✓| ✓
Total Amount of Aux Contacts ➋| 6| 8| 8| 8| 6| 2| 2| 2
Padlockable at Switch| ✓ ➋| ✓| ✓| ✓| ✓ ➋| ~| ~| ~
Enclosed Switches: Steel, Stainless Steel & Non-Metallic| ✓| ✓| ➌| ➌| ✓| ✓| ➌| ➌

➊ Optional Switch Selection ➋ Accessory Item ➌ Refer to Factory
UL Enclosed L11 Motor Disconnect Switches (Fused and Non-Fused)See current catalog for complete details and specifications
Series L11 Disconnect Switches

Accessories

Fully Rated Fusible 4-Pole Module

• Provides flexibility in expanding power control capabilities
• Easy, snap-on field installation converts 3-pole switch to a 4-pole switch in seconds for a lower inventory cost (30/60A)

Fuse Carriers

• Exclusive blown fuse light indication accessory (30/60A)
• Removable fuse carriers for easy fuse installation and replacement
• Fuse carriers lock in when switch is ON
• Dead front for safety when fuse carrier is removed

Auxiliary Contact Blocks
Convenient use of D7 pilot device contact blocks for 30 to 800A fusible units. Micro-switch NOEB/NC auxiliary contact for 100 to 1200A non-fused units.

Type 4/4X Switch Handles
Rugged pistol grip switch handles offered in defeatable or non-defeatable functions. Available with Test Mode position for circuit testing (30/60A). All OSHA lockout/ tagout compliant.
NFPA 79 Handle Kit
Includes NFPA 79 red handle mechanism, operating shaft, and tube shaft guard for option of switching during maintenance and testing.

Operating Shaft
Handle operating shaft lengths from 12” (305mm) to 22” (560mm)
Multi-tap Terminal Lug
Eliminates cost for a separate distribution block in panel (30/60A)
Many Other Accessories
Protective covers, terminal lugs and shrouds, locking attachments, and more.
For more information, or to contact your Sprecher + Schuh representative, visit www.sprecherschuh.com
Sprecher + Schuh US Division Headquarters • 15910 International Plaza Dr., Houston, TX 77032
Customer Service: 877-721-5913; Fax: 800-739-7370

Publication No: F-L11DISCONNECT_v5

References

• The Official website for all your motor control and protection needs | Sprecher + Schuh

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