sprecher schuh Fractional Manual Starters User Guide
- June 3, 2024
- sprecher schuh
Table of Contents
Fractional Manual Starters
Easy, simple starting of
Motors up to 1 HP
Fractional Manual Starter
FMS
with Neon Pilot light
|
Ratings (HP)
|
Poles
➋
|
Type 1
General Purpose
Surface Mounting
Catalog Number
---|---|---|---
115…230V AC| 277V AC
Toggle Switch Only
1
1
|
1
1
|
1-Pole 2-Pole
|
FMS-TAX4 FMS-TAX5
Toggle Switch with Neon Pilot Light (115 or 230V)
1
1
|
1
1
|
1-Pole 2-Pole
|
FMS-TAX216 FMS-TAX109
Optional Locking Attachment
| **** | Accessory | Catalog Number |
|---|
Locking Attachment
For locking toggle switch in ON or OFF position.| FMS-N1
Selecting Heater Elements
The “Full Load Amps” listed in the table can be used for heater element selection. The rating of the relay in amperes at 40ºC is 115% of the “Full Load Amps” (FLA) listed for the catalog number. Refer to the motor nameplate for the full load current, the service factor, and/or the motor classification by application and temperature rise. Use this motor nameplate information, the application rules and the FLA listed in the table to determine the Heater Element catalog number for motors rated for Continuous Duty.
-
For the Same Temperature at the Controller and Motor : Select the Heater Element with the listed FLA nearest the full load value shown on the motor nameplate.
-
For Higher Temperature at the Controller than at the Motor : If the full load current value shown on the motor nameplate is between the listed FLAs, select the Heater Element with the next higher value.
-
For a Lower Temperature at the Controller than at the Motor : If the full load current value shown on the motor nameplate is between the listed FLAs , select the Heater
Element with the next lower value. -
All other motors rated for continuous duty (includes motors with marked service factor 1.0): Select the Heater Element one rating smaller than determined by rules in 1, 2 and 3.
Ordering Instructions
Order FMS Catalog Number
Order Required FMS Heater Element(s) ➊
Order Optional FMS Locking Attachment
- One heater is required for 1-pole or 2-pole applications. See schematic on next page.
- Two-pole selections are applicable for 3/4 HP at 115…230V DC.
- Rule 2 and 3 temperature difference not to exceed more than 10ºC (18ºF).
Easy to Order
FMS Starters are easy to order. Simply choose a 1-Pole or 2-Pole with or without the Neon pilot light and then order the required Heater Element. You’re done!
Typical Applications
Starting and overload protection of small 1-phase 115…230V AC/ DC or 277 VAC motors used on the following applications:
- Unit heaters
- Fans
- Stokers
- Pumps
- Refrigeration compressors
Heater Element (Required) ➊
| Full Load Amps | Catalog Number |
|---|---|
| 0.17 | **P1** |
| 0.21 | **P2** |
| 0.25 | **P3** |
| 0.32 | **P4** |
| 0.39 | **P5** |
| 0.46 | **P6** |
| 0.57 | **P7** |
| 0.71 | **P8** |
| 0.79 | **P9** |
| 0.87 | **P10** |
| 0.98 | **P11** |
| 1.08 | **P12** |
| 1.19 | **P13** |
| 1.30 | **P14** |
| 1.43 | **P15** |
| 1.58 | **P16** |
| 1.75 | **P17** |
| 1.88 | **P18** |
| 2.13 | **P19** |
| 2.40 | **P20** |
| 2.58 | **P21** |
| 2.92 | **P22** |
| 3.09 | **P23** |
| 3.32 | **P24** |
| 3.37 | **P25** |
| 4.16 | **P26** |
| 4.51 | **P27** |
| 4.93 | **P28** |
| 5.43 | **P29** |
| 6.03 | **P30** |
| 6.83 | **P31** |
| 7.72 | **P32** |
| 8.24 | **P33** |
| 8.90 | **P34** |
| 9.60 | **P35** |
| 10.8 | **P36** |
| 12.0 | **P37** |
| 13.5 | **P38** |
| 15.2 | **P39** |
Sprecher + Schuh Fractional Manual Starters (FMS) consist of a snap switch
combined with a thermal overload device operating on the solder-ratchet
principle. To reset the overload mechanism, the switch lever is moved to the
OFF position. The motor can be restarted by simply pushing the switch lever to
the ON position. The switch is designed to prevent being held closed under a
sustained motor overload.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>