Schneider Electric AT-520-011-1 Relay Repair Kit Parts List User Guide

AT-520-011-1

Relay Repair Kit

Kits Parts List

TOOL-115 (Torx T-8 screwdriver or offset wrench) is required to install this kit for thermostats manufactured after

1-1-81.

Item

No.

22

25

33 b

34

40

43

48

75

77

105 ab

177

ab

100X

1

2

1

1

1

1

N/A

1

1

1

1

110X

1

2

1

1

1

1

N/A

1

1

1

1

1

1

1

1

12X1

1

2

1

1

1

1

1 1

1

1

1

1

1

1

1

1

Quantity Used

13XX 16XX

1

2

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1X7X

1

2

1

1

1

1

1 a b

Part numbers 33, 105, and 177 must be replaced as a set.

Part numbers 105 and 177 were factory assembled as one part before 10-1-88.

1

1

1

1

17XX

1

2

1

1

1

1

1

18XX

1

2

1

1

1

1

N/A

1

1

1

1

Description

Pilot Diaphragm Spring

Main Filter, Branch Filter

Pilot Diaphragm Assembly

Feedback Diaphragm

Main Valve Plug

Back Gasket

Switch Over Diaphragm

Main Valve Spring

Feedback Spring

Branch Diaphragm

Vent Nozzle

Quantity in Kit

1

1

1

1

1

1

1

2

1

1

1

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