Littelfuse 35040026, 350 Series, 3-phase voltage/phase monitor, Voltage Asymmetry, Voltage Sensing AC 380 ~ 480VAC, DPDT (2 Form C)
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The 350 series is a heavy-duty voltage monitor. This product should be used when high current relays or dual contacts are required, or 480 V controls are used. Since the 350 series uses heavy-duty relays, it comes in fixed voltage range models rather than a dual auto-ranging version like the model 250.
The 350200 has a 15 A general purpose contact. The 350400 provides a SPDT (Form C) relay rated to switch up to 600 V, allowing the use of 480 V controls, eliminating the need for a control power transformer to step the voltage down to 120–240 V. Several DPDT (two Form C contacts) relay models are also available. The 350 microcontroller-based family of products are low cost yet highly advanced solutions to heavy-duty problems.
The 350 includes advanced single LED diagnostics. Five different light patterns distinguish faults and normal operating conditions. Other options such as high voltage trip and adjustable restart delay are available.
Features
Proprietary microcontroller-based circuitry
Adjustable restart delay (-2 models) settings
Advanced LED indication
600 V rated relay contacts available on some models
*Note: 50 Hz will increase all delay timers by 20 %
Specifications
| Input Characteristics | |
| Line Voltage |
350200: 190–240 V ac 350400: 380–480 V ac 350600: 475–600 V ac |
| Frequency | 50*/60 Hz |
| Functional Characteristics | |
| Low Voltage (% of setpoint) |
Trip 90 % Reset 93 % |
| Voltage Unbalance (NEMA) |
Trip 6 % Reset 4.5 % |
| Trip Delay Time: |
Low Voltage 4 seconds Unbalance & Phasing Faults 2 seconds |
| Restart Delay Time |
After a Fault 2 seconds After a Complete Power Loss 2 seconds |
| Output Characteristics | |
| Output Contact Rating SPDT (350200) | |
| SPDT (350200) |
Pilot Duty 480 VA @ 240 V ac General Purpose 15 A |
| SPDT (350-400, 350-600) | 470 VA @ 600 V ac |
| DPDT (-6 Option) |
1–10 A General Purpose 480 VA @ 240 V ac Pilot Duty 1–15 A General Purpose 480 VA @ 240 V ac Pilot Duty 1 hp @ 240 V ac |
| DPDT (-8 Option) |
2–15 A General Purpose 480 VA @ 240 V ac Pilot Duty 1 hp @ 240 V ac |
| General Characteristics | |
| Ambient Temperature Range |
Operating -40° to 70°C (-40° to 158°F) Storage -40° to 80°C (-40° to 176°F) |
| Trip & Reset Accuracy | ±1 % |
| Maximum Input Power | 5W |
| Terminal |
Torque 7 in.-lbs. Wire Size 12–18 AW |
| Transient Protection (Internal) | IEC 61000-4-5; 1995 ±6 kV |
| Safety Marks |
UL UL 508 (File #E68520) CSA 22.2 No. 14 (File #46510) |
| Dimensions |
H 74.42 mm (2.93”) W 133.86 mm (5.27”) D 74.93 mm (2.95”) |
| Weight | 1.05 lbs. (16.8 oz., 476 |
| Mounting Method | #8 screws |
| Special Options |
Opt. 2: Variable Restart Delay Manual, 2–300 seconds adj. Opt. 5: DPDT Relay Opt. 6: 2 Relays (1) 10 A, (1) 15 A Opt. 8: 2 Relays (2) 15 A Opt. 9: High Voltage |
| (% of setpoint) |
Trip 110 % Reset 107 % |