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The FM1D Series Timers are compact electronic 24 hour/ 

7 day time switch module with heavy duty relay contacts for switching 

low or line voltage loads. Applicable for time of day control of pumps, 

fans, heaters, HVAC control circuits, lighting, machinery and many 

other types of commercial, industrial, and agricultural equipment. 

The FM1D Series features large keys with unique “circular pattern” for 

easy programming, an easy-to-read LCD display and capacitor backup 

to retain program memory during power outages.

TECHNICAL DATA: 

 

 

 

Input draw: 4VA

Input frequency: 60Hz

Wiring connections: 1/4” quick connects

Ambient temperature: –14°F to 131°F (–10°C to 55°C)

Agency Approvals: UL Recognized

INSTALLATION & WIRING:

Note: Although the FM1D models contain some 

degree of spike and electrical noise protection, as 

with all electronic devices, these units can be affect-

ed by electrical noise. Therefore, it is recommended 

that they be powered from a voltage source that has 

no switching devices or inductive loads connected.

1. Check the input and output ratings marked on 

the unit to make sure this product is suitable for your 

supply voltage, load, and application.

2. Disconnect supply power prior to installation to 

prevent electrical shock.

3. Install in accordance with all applicable 

National and Local electrical code requirements.

MOUNTING OPTIONS:

The standard FM1D models may be surface 

mounted inside a panel or flush mounted with FM-FU 

mounting kit, available from Intermatic. Indoor NEMA 

1, and outdoor NEMA 3R enclosures are available 

for stand-alone mounting. Consult Intermatic catalog 

or price sheet for various options.

FM1D20A and FM1D50A models are available 

with screw terminals and din rail mounting.

FM1D20E and FM1D50E models are available for 

flush mounting and include a protective housing.

All models include a clear plastic snap on dust 

cover. 

Holiday Program: No

Daylight time changeover: Manual

Manual 3 way override: On-Auto-Off

Shortest switching time: 1 minute

Reserve carryover: 3  years (Non-Replaceable Battery)  

Input voltage available: 

 

20 set point models:

FM1D Series

One Channel Electronic  

Time Switch

Dimensions

COM

NO

NC

M

Normally Open

(Dry Contact)

Normally Closed

(Dry Contact)

1

L1

L2/N

2

3

4

5

COM

NO

NC

M

Hot

Neutral

1

120VAC

2

4

5

LOAD

COM

NO

NC

M

(+)

(–)

1

24VDC

2

3

4

5

LOAD

3

COM

NO

NC

M

Normally Open

(Dry Contact)

Normally Closed

(Dry Contact)

1

L1

L2/N

2

3

4

5

COM

NO

NC

M

Hot

Neutral

1

120VAC

2

4

5

LOAD

COM

NO

NC

M

(+)

(–)

1

24VDC

2

3

4

5

LOAD

3

COM

NO

NC

M

Normally Open

(Dry Contact)

Normally Closed

(Dry Contact)

1

L1

L2/N

2

3

4

5

COM

NO

NC

M

Hot

Neutral

1

120VAC

2

4

5

LOAD

COM

NO

NC

M

(+)

(–)

1

24VDC

2

3

4

5

LOAD

3

Typical Wiring (120VAC Application)

Typical Wiring (24VDC Application)

Terminal Connections

   24VAC/DC; 

    120VAC;

   208/240VAC
Switch ratings:

N.O. Contact: 

  -1/2hp, 120 V ac 

  -1hp, 240 V ac 

  -8 A, 24 V dc resistive 

  -16 A, 277 V ac resistive 

  -12 A Ballast, 120 V ac 

  -8 A Ballast, 240 V ac 

  -720 VA 240 V ac Pilot Duty 

  -360 VA 120 V ac Pilot Duty 

  -1000W Tungsten,240 V ac 

  -600W Tungsten,120 V ac

N.C. Contact 

  -16 A, 277 V ac resistive 

  -8 A, 24 V dc Pilot Duty 

  -360 VA, 120 V ac Pilot Duty

Switching output: SPDT relay 

 

50 set point models:

12VAC/DC; 

24VAC;

120VAC

240VAC

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